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$20.99
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12V Light Dependent Resistor Module Photoresistor Light Sensor Relay Switch for Automatic Detection Control Light Sensitive Circuit — image 1
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12V Light Dependent Resistor Module Photoresistor Light Sensor Relay Switch for Automatic Detection Control Light Sensitive Circuit

$20.99
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About this item
  • Adopts photoresistor to sense light intensity, can directly control load
  • Used for 12V power supply input, designed with 78L05 regulated transistor, stable and performance
  • Optical coupling isolation drive relay can effectively protect chip, safe for use
  • Suitable for light detection, brightness detection, all kinds of light detection switch, controlling street lamps and automatic equipment
  • Potentiometer can be adjusted to change sensitivity and set relay start threshold; when it is darker than the threshold, relay is energized; when it is brighter than the threshold, relay is de-energized
Product description

Specifications: Voltage: 12VDC Current: >100mA Load Capacity: 250V 10A AC; Or 30V 10A DC PCB Size: 5×2.6cm/1.96×1.02" Instruction: 1. Photosensitive resistance module is sensitive to ambient light, commonly used to detect the brightness change of ambient light. 2. Relay module is energized when ambient light is darker than set threshold; COM and NO terminals are connected. Relay module is de-energized when ambient light is brighter than set threshold; COM connect to NC terminal. 3. COM, NO and NC terminals are equivalent to a three-way switch. When relay coil is energized, COM is connected to NO terminal. When coil is not energized, COM is connected to NC terminal. Package Includes: 1×Photoresistor Switch

Product details
Brand
Walfront
Manufacturer
Walfront

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10 Trustpilot reviews total, with 2 shown at a time.

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Excellent
4.5 average rating
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Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

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Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

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