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30% off
20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board 20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board

20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board

$0.66$0.95

40 sold
52% off
1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board. 1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board.

1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board.

$26.72$55.66

1 sold
5% off
Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module

Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module

$2.36$2.48

1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A 1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A

1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A

$3.96$3.96

50% off
2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi 2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi

2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi

$44.12$88.25

5% off
Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module

Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module

$25.46$26.80

5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor 5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor

5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor

$175.00$175.00

5% off
Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original

Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original

$5.46$5.75

25% off
10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board 10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board

10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board

$0.31$0.42

Liquid level sensor, small low-power water level sensing switch, water tank water shortage alarm, non-contact liquid detection

Liquid level sensor, small low-power water level sensing switch, water tank water shortage alarm, non-contact liquid detection

$3.98$3.98

High and low water level automatic liquid level controller / controller / external waterproof sensor High and low water level automatic liquid level controller / controller / external waterproof sensor

High and low water level automatic liquid level controller / controller / external waterproof sensor

$26.98$26.98

Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat

Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat

$199.00$199.00

25% off
10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit 10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit

10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit

$0.22$0.30

10 sold
10-50pcs Laser sensor receiving module, with low-level output of laser signal 10-50pcs Laser sensor receiving module, with low-level output of laser signal

10-50pcs Laser sensor receiving module, with low-level output of laser signal

$137.20$137.20

5% off
10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects 10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects

10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects

$134.77$141.86

52% off
DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry

DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry

$19.80$41.63

5040 sold
3% off
30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT 30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT

30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT

$213.40$220.00

50% off
JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS

JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS

$22.21$44.42

25% off
5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger 5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger

5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger

$1.20$1.60

2 sold
50% off
LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$20.40$40.80

603 sold
35% off
1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control 1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control

1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control

$8.70$13.39

50% off
Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module

Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module

$25.17$50.34

427 sold
50% off
Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications

Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications

$4528.04$9056.09

50% off
DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger

DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger

$20.36$40.72

355 sold
5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino 5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino

5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino

$1.06$1.06

5% off
Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage

Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage

$14.23$14.98

10% off
High and low level Controller/liquid water intelligent detection automatically turn off/automatic water level controller liquid

High and low level Controller/liquid water intelligent detection automatically turn off/automatic water level controller liquid

$27.90$31.00

5% off
1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models) 1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models)

1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models)

$2.33$2.45

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$16.76$16.76

1 sold
5% off
1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino 1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino

1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino

$10.77$11.34

69% off
LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$18.64$61.93

200 sold
5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage 5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage

5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage

$214.29$214.29

36% off
One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module

One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module

$10.88$17.00

5% off
Brand new original genuine 2N5457 TO-92 low-level audio amplifier and switch transistor direct insertion

Brand new original genuine 2N5457 TO-92 low-level audio amplifier and switch transistor direct insertion

$25.19$26.52

52% off
600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver 600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver

600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver

$28.54$59.45

15 sold
A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC

A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC

$649.53$649.53

30% off
20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board 20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board

20pcs/1pc MAX3485 SP3485 TTL to RS485 Converter Module ZY-MAX3485 ZY-SP3485 Communication Microcontroller Level Conversion Board

$0.66 $0.95

40 sold

Categories: Electronic Components & Supplies, Active Components

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52% off
1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board. 1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board.

1Pc 3.3V 5V 12V 24V 1 Channel Relay Module High Low Level Trigger Dual Optocoupler Isolated Relay Board.

$26.72 $55.66

1 sold

Categories: Electronic Components & Supplies, Active Components

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5% off
Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module

Free Ship 1PCS 2-Way 12V Relay Module With Optocoupler Isolation Support High And Low Level-Triggered Two-Way Relay Module

$2.36 $2.48

Categories: Electronic Components & Supplies, Active Components

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1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A 1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A

1 2 4 8 Channel Way 5V 12V 24V High Low Level Trigger Solid State Relay Module Board Relay SSR 250VAC/2A 240VAC/2A

$3.96 $3.96

Categories: Electronic Components & Supplies, Active Components

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50% off
2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi 2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi

2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA2560 STM32 Raspberry Pi

$44.12 $88.25

Categories: Electronic Components & Supplies, Active Components

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5% off
Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module

Active/Passive Buzzer Module High/Low Level Trigger Buzzer Control Board Sound Sensor Module

$25.46 $26.80

Categories: Electronic Components & Supplies, Active Components

Buy Now
5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor 5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor

5-15pcs New original TMR1303 magnetic switch sensor chip microamps level high frequency low power TMR magnetic sensor

$175.00 $175.00

Categories: Electronic Components & Supplies, Active Components

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5% off
Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original

Free Ship 1PCS 1-Way Dual Signal-Level Low-Level Trigger Relay Module 5V 1A Current Original

$5.46 $5.75

Categories: Electronic Components & Supplies, Active Components

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25% off
10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board 10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board

10Pcs/1pc CH340C STC ISP Microcontroller Program Automatically Downloads Programmer Module USB Type-C to UART Serial Port Board

$0.31 $0.42

Categories: Electronic Components & Supplies, Active Components

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Liquid level sensor, small low-power water level sensing switch, water tank water shortage alarm, non-contact liquid detection

Liquid level sensor, small low-power water level sensing switch, water tank water shortage alarm, non-contact liquid detection

$3.98 $3.98

Categories: Electronic Components & Supplies, Active Components

Buy Now
High and low water level automatic liquid level controller / controller / external waterproof sensor High and low water level automatic liquid level controller / controller / external waterproof sensor

High and low water level automatic liquid level controller / controller / external waterproof sensor

$26.98 $26.98

Categories: Electronic Components & Supplies, Active Components

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Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat

Formaldehyde (HCHO) Threshold Detection Sensor - 5-24V Wide Voltage, High/Low Level Output, 0.06ppm Fixed Threshold, LED Indicat

$199.00 $199.00

Categories: Electronic Components & Supplies, Active Components

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25% off
10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit 10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit

10Pcs/1pc 5V Active Passive Speaker Buzzer Sound Module Low Level Trigger For Arduino Electronic DIY Kit

$0.22 $0.30

10 sold

Categories: Electronic Components & Supplies, Active Components

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10-50pcs Laser sensor receiving module, with low-level output of laser signal 10-50pcs Laser sensor receiving module, with low-level output of laser signal

10-50pcs Laser sensor receiving module, with low-level output of laser signal

$137.20 $137.20

Categories: Electronic Components & Supplies, Active Components

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5% off
10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects 10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects

10pcs Passive Buzzer Module Low Level Trigger Buzzer Control Board for Arduino DIY Projects

$134.77 $141.86

Categories: Electronic Components & Supplies, Active Components

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52% off
DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry

DC 5V 12V 24V 1 2 4 6 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry

$19.80 $41.63

5040 sold

Categories: Electronic Components & Supplies, Active Components

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3% off
30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT 30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT

30A 8-Channel Optocoupler Relay Board, 5-24V, High/Low Level Trigger, Home/IoT

$213.40 $220.00

Categories: Electronic Components & Supplies, Active Components

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50% off
JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS

JDY-62A Mini Bluetooth Stereo Audio Module Dual Channel High/Low Level Output PCB Antenna Auto Sleep Compatible With Arduino IOS

$22.21 $44.42

Categories: Electronic Components & Supplies, Active Components

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25% off
5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger 5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger

5V 12V 24V Single Key Bistable Self-Lock Relay Module One Key Start Stop 2CH High-low Level Auto-lock/Interlocking/Jog Trigger

$1.20 $1.60

2 sold

Categories: Electronic Components & Supplies, Active Components

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50% off
LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$20.40 $40.80

603 sold

Categories: Electronic Components & Supplies, Active Components

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35% off
1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control 1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control

1 Channel 3V Relay Module Board 3.3V Low Level Trigger Relay Module With Indicator Light For Raspberry Pi MCU Control

$8.70 $13.39

Categories: Electronic Components & Supplies, Active Components

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50% off
Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module

Mini Battery Level Indicator Module, 1S, 2S, 3S, 4S Series Battery Meter, Lithium Battery Percentage Display Module

$25.17 $50.34

427 sold

Categories: Electronic Components & Supplies, Active Components

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50% off
Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications

Low Water cut-off/pump Controllers 150S For steam Boilers and Other Level Control Applications

$4528.04 $9056.09

Categories: Electronic Components & Supplies, Active Components

Buy Now
50% off
DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger

DC 5V 12V 24V 1 Channel Relay Module Board Low Level Trigger

$20.36 $40.72

355 sold

Categories: Electronic Components & Supplies, Active Components

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5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino 5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino

5V Relay 1 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino

$1.06 $1.06

Categories: Electronic Components & Supplies, Active Components

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5% off
Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage

Non-contact water level detection sensor - supports calibration, low power consumption, automatic top-up and drainage

$14.23 $14.98

Categories: Electronic Components & Supplies, Active Components

Buy Now
10% off
High and low level Controller/liquid water intelligent detection automatically turn off/automatic water level controller liquid

High and low level Controller/liquid water intelligent detection automatically turn off/automatic water level controller liquid

$27.90 $31.00

Categories: Electronic Components & Supplies, Active Components

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5% off
1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models) 1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models)

1PCS Pp Low-Voltage Right Angle Pp Float Switch Water Level/Liquid Level Switch Liquid Level Sensor (Available In Two Models)

$2.33 $2.45

Categories: Electronic Components & Supplies, Active Components

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LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$16.76 $16.76

1 sold

Categories: Electronic Components & Supplies, Active Components

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5% off
1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino 1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino

1Pc DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino

$10.77 $11.34

Categories: Electronic Components & Supplies, Active Components

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69% off
LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

LM393 Voltage Comparator Module Signal Waveform Adjustable High Low Level/Load Drive Dual Channel 4.5-28V High Voltage Module

$18.64 $61.93

200 sold

Categories: Electronic Components & Supplies, Active Components

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5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage 5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage

5pcs Water Liquid Level Switch Sensor Controller Module DC 12V Power 10A Relay Water Tank Tower Pool Automatic Pumping Drainage

$214.29 $214.29

Categories: Electronic Components & Supplies, Active Components

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36% off
One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module

One Channel 5V Low-Level Trigger Solid-State Relay Module 250V/2A - Electronic Project Module

$10.88 $17.00

Categories: Electronic Components & Supplies, Active Components

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5% off
Brand new original genuine 2N5457 TO-92 low-level audio amplifier and switch transistor direct insertion

Brand new original genuine 2N5457 TO-92 low-level audio amplifier and switch transistor direct insertion

$25.19 $26.52

Categories: Electronic Components & Supplies, Active Components

Buy Now
52% off
600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver 600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver

600W High-Power MOSFET Trigger Module DC 4V-60V PWM Control High/Low Level Trigger Switch for Motor/LED Driver

$28.54 $59.45

15 sold

Categories: Electronic Components & Supplies, Active Components

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A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC

A11D-4C Low Temp Open Circuit Controller Air Conditioner Antifreeze Switch Temperature Sensor Replacement Part for HVAC

$649.53 $649.53

Categories: Electronic Components & Supplies, Active Components

Buy Now