XH-M131 LDR Light-Controlled 12V Relay Switch Module
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Prices updated: 12 Oct 2026
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About this product
A light-activated relay module that uses an LDR photoresistor to switch a relay according to ambient brightness. A potentiometer sets the brightness threshold, and the module runs on 12V with no time-delay function. It suits automatic lighting such as switching lights on at dusk and off in daylight.
Specifications
- Supply voltage
- 12V DC / 12 فولت تيار مستمر
- Light sensor
- LDR photoresistor / مقاومة ضوئية LDR
- Output
- Relay switch / مفتاح مرحل
- Threshold adjustment
- Potentiometer / مقاومة متغيرة
- Time delay
- None / بدون
Frequently asked questions
How do I set the brightness level for switching?
Turn the potentiometer until the relay switches at the light level you want. Test under the actual lighting conditions where the module will be installed.
Can it switch mains-powered lighting?
The listing does not state the relay contact rating. Check the rating printed on the relay before switching any mains-powered load, and use proper isolation and enclosures.
