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31% off
8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V 8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V

8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V

$3.66$5.30

25 sold
30% off
16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module 16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module

16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module

$11.22$16.03

5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock 5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock

5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock

$1.40$1.40

41 sold
49% off
1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino 1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino

1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino

$23.92$47.83

308 sold
30% off
DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino

DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino

$1.22$1.75

2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V 2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V

2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V

$9.20$9.20

5% off
1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY 1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY

1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY

$1.75$1.85

1059 sold
8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY 8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY

8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY

$30.54$30.54

33% off
Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se

Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se

$106.12$158.55

5% off
LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board

LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board

$1249.38$1315.14

8% off
High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation

High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation

$42.61$46.32

8% off
GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts

GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts

$920.00$1000.00

8% off
DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger

DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger

$23.00$25.00

65% off
5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino 5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino

5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino

$20.58$58.80

1 sold
31% off
Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino

Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino

$54.80$79.42

1 sold
15% off
Logic test pen high and low level test 5V 3.3V digital circuit debugging electronic production

Logic test pen high and low level test 5V 3.3V digital circuit debugging electronic production

$10.50$12.35

Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V

Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V

$0.88$0.88

1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor 1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor

1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor

$1.09$1.09

119 sold
10-100PCS New original CD40109BE inline DIP-16 low voltage to high voltage level converter chip logic IC

10-100PCS New original CD40109BE inline DIP-16 low voltage to high voltage level converter chip logic IC

$40.00$40.00

MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output

MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output

$28.18$28.18

10% off
LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger

LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger

$6.19$6.88

Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels

Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels

$2.00$2.00

30% off
5pcs TLP281 4-channel optical isolation module, high-low level expansion board, electronic building block module

5pcs TLP281 4-channel optical isolation module, high-low level expansion board, electronic building block module

$19.76$28.23

10% off
1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control 1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control

1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control

$0.89$0.99

5% off
Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels

Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels

$3.69$3.88

69% off
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino 1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino

1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino

$19.07$63.44

113 sold
1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control 1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control

1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control

$3.62$3.62

33% off
10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional 10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional

10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional

$3.89$5.80

11 sold
35% off
Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v

Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v

$85.80$132.00

50% off
1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino 1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino

1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino

$33.36$66.73

5% off
1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock 1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock

1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock

$14.25$15.00

25% off
DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter

DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter

$0.82$1.10

2 sold
9% off
WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board

WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board

$1.12$1.23

10% off
ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control

ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control

$1.80$2.00

1 sold
 1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino  1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino

 1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino

$0.79$0.79

1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board 1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board

1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board

$38.12$38.12

5 sold
31% off
8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V 8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V

8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V

$3.66 $5.30

25 sold

Categories: Electronic Components & Supplies, Active Components

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30% off
16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module 16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module

16 Way Channel relay module 5V 12V low level with optocoupler protection LM2596 power control board module

$11.22 $16.03

Categories: Electronic Components & Supplies, Active Components

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5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock 5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock

5V 12V 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock

$1.40 $1.40

41 sold

Categories: Electronic Components & Supplies, Active Components

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49% off
1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino 1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino

1PCS Relay Module 5V 12V 24V 1 2 4 8 Channel Relay Modules Board with Optocoupler Support High and Low Level Trigger for Arduino

$23.92 $47.83

308 sold

Categories: Electronic Components & Supplies, Active Components

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30% off
DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino

DC 3V 5V 12V 24V Relay Module Single Channel High Level Driver Board Optocoupler Isolated Control Module for Arduino

$1.22 $1.75

Categories: Electronic Components & Supplies, Active Components

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2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V 2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V

2-way relay module with optocoupler isolation supports high and low level trigger expansion board 5V12V24V

$9.20 $9.20

Categories: Electronic Components & Supplies, Active Components

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5% off
1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY 1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY

1 2 4 8 Channel 5V 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino Electronic DIY

$1.75 $1.85

1059 sold

Categories: Electronic Components & Supplies, Active Components

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8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY 8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY

8 channel with optocoupler isolation relay module supports high and low level trigger 5V12V24V development board DIY

$30.54 $30.54

Categories: Electronic Components & Supplies, Active Components

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33% off
Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se

Stainless steel float level switch, water level detector, low water level alarm, full water level alarm, overflow and leakage se

$106.12 $158.55

Categories: Electronic Components & Supplies, Active Components

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5% off
LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board

LILYGO® T5S3 Pro 4.7-inch E-Paper Display ESP32-S3 LoRa Wireless Module 16 Gray Levels Ultra-Low Power E-paper Development Board

$1249.38 $1315.14

Categories: Electronic Components & Supplies, Active Components

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8% off
High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation

High Voltage High Power MOSFET Module PWM Regulation Electronic Switch Control Board High and Low Level Optocoupler Isolation

$42.61 $46.32

Categories: Electronic Components & Supplies, Active Components

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8% off
GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts

GEOX 150S 157S Low Water Cut Off Switch Timed Cut-off Boiler Water Level Controller Spare Parts

$920.00 $1000.00

Categories: Electronic Components & Supplies, Active Components

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8% off
DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger

DC 5V 1 2 4 6 8 way relay module for arduino 1 2 4 6 8 channel relay module with optocoupler High and Low Level Trigger

$23.00 $25.00

Categories: Electronic Components & Supplies, Active Components

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65% off
5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino 5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino

5V 12V 24V low level trigger One 1 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino

$20.58 $58.80

1 sold

Categories: Electronic Components & Supplies, Active Components

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31% off
Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino

Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino

$54.80 $79.42

1 sold

Categories: Electronic Components & Supplies, Active Components

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15% off
Logic test pen high and low level test 5V 3.3V digital circuit debugging electronic production

Logic test pen high and low level test 5V 3.3V digital circuit debugging electronic production

$10.50 $12.35

Categories: Electronic Components & Supplies, Active Components

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Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V

Relay Module With Optocoupler Relay Relay Board High And Low Level Trigger 1-way (one channel)5V 12V 24V

$0.88 $0.88

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1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor 1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor

1/5/10PCS Active / Passive Buzzer Module DC 3.3-5V For Arduino Smart Car DIY Kit Low Level Trigger Control Board Sound Sensor

$1.09 $1.09

119 sold

Categories: Electronic Components & Supplies, Active Components

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10-100PCS New original CD40109BE inline DIP-16 low voltage to high voltage level converter chip logic IC

10-100PCS New original CD40109BE inline DIP-16 low voltage to high voltage level converter chip logic IC

$40.00 $40.00

Categories: Electronic Components & Supplies, Active Components

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MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output

MG811 carbon dioxide sensor module CO2 gas air detection concentration DC 6V analog signal/TTL LOW level output

$28.18 $28.18

Categories: Electronic Components & Supplies, Active Components

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10% off
LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger

LIZAO DC 6-30V 30A Delay Relay Module LCD Digital Timing Control Support PNP NPN High Low Level Sensor Trigger

$6.19 $6.88

Categories: Electronic Components & Supplies, Active Components

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Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels

Relay Module 5V an optical decoupling tape to trigger PH2.0 interface with high and low levels

$2.00 $2.00

Categories: Electronic Components & Supplies, Active Components

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30% off
5pcs TLP281 4-channel optical isolation module, high-low level expansion board, electronic building block module

5pcs TLP281 4-channel optical isolation module, high-low level expansion board, electronic building block module

$19.76 $28.23

Categories: Electronic Components & Supplies, Active Components

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10% off
1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control 1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control

1/2/4/8 Channel SSR Solid State Relay Module 12V High Low Level Trigger 250V 2A Output Switch Board for Arduino MCU Control

$0.89 $0.99

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5% off
Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels

Free Ship 1PCS 12V Normally Open-Type Trigger Delay Relay Vibration Alarm Delay Circuit Module Short-Circuit High And Low Levels

$3.69 $3.88

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69% off
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino 1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino

1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For Arduino

$19.07 $63.44

113 sold

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1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control 1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control

1-10PCS TLP281-4 4-Channel Optocoupler Isolation Module High/Low Level Input for Arduino, Raspberry Pi, Industrial Control

$3.62 $3.62

Categories: Electronic Components & Supplies, Active Components

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33% off
10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional 10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional

10-100PCS/Lot IS0103 Laser Receiver Tube-to-Tube (Non-Modem) Normal High/Low Level IS0103/IS0203 Optional

$3.89 $5.80

11 sold

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35% off
Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v

Single-chip microcomputer industrial control computer PLC conversion module board, PNP to NPN level conversion of high and low v

$85.80 $132.00

Categories: Electronic Components & Supplies, Active Components

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50% off
1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino 1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino

1PCS 5V Low Level Relay Module 1 2 4 8 Channel Solid State Relay Modules 240V 2A with Resistive Fuse for Arduino

$33.36 $66.73

Categories: Electronic Components & Supplies, Active Components

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5% off
1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock 1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock

1PCS A 1-channel solid-state relay module triggers a 250V2A relay module at a low level of 5V New In stock

$14.25 $15.00

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25% off
DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter

DC 3.5V-12V KA2284 Power Audio Voltage Level Indicator Battery Capacity Indicator Red Green LED For Voltmeter Volume VU Meter

$0.82 $1.10

2 sold

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9% off
WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board

WAVGAT 3V 5V 12V 24V 1-way electromagnetic relay module Low-level trigger PLC control driver board

$1.12 $1.23

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10% off
ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control

ESP8266 Dual Channel WIFI Relay Module ESP-01 DC5V With Relay Indicator and Reset Button 2 CH relay Boad Low Level Control

$1.80 $2.00

1 sold

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 1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino  1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino

 1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger for Arduino

$0.79 $0.79

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1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board 1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board

1/2/4/8 5V12V24V Relay Module With Optocoupler Isolation Support For High And Low Level Trigger Expansion Board

$38.12 $38.12

5 sold

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