Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 5V / 12V
Sensor Type	Photoresistor (LDR)
Output Mode	Digital Switch (On/Off)
Load Capacity	Max 10A Relay Output
Sensitivity Adjustment	Potentiometer Control
Indicator LED	Power and Status LEDs
PCB Dimensions	32mm x 14mm
Mounting Holes	3mm Diameter
Response Time	< 1 Second
Application	Street Lights, Night Lamps, Automation

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for my garden lighting project

This module works exactly as described. I connected it to a 12V LED strip for my garden path, and the automatic on/off feature based on ambient light is very reliable. The potentiometer makes it easy to set the trigger threshold.

Anonymous

Mar 11, 2026

Rating: 5/5

Simple and effective

No complex programming needed. Just power it up, adjust the sensitivity dial, and it works. I used it to control a bedroom night light, and it has been working flawlessly for two weeks.

Anonymous

Mar 06, 2026

Rating: 5/5

Reliable relay action

I've tested this with a 5V supply and a small fan. The relay clicks clearly and switches the load instantly when the light changes. No flickering issues even during twilight conditions.

Anonymous

Mar 05, 2026

Rating: 4/5

Works well after figuring out the pins

The module functions great once you identify the VCC, GND, and Output pins correctly. The silk screen is slightly faint, so double-check your wiring before powering on. Otherwise, a solid product.

Anonymous

Mar 03, 2026

Rating: 5/5

Great for solar setups

Using this to automatically switch on my backup lights when the solar panel output drops in the evening. The hysteresis seems good enough to prevent rapid cycling. Highly recommended for off-grid projects.

Anonymous

Mar 02, 2026

Rating: 4/5

Good value, easy to integrate

Great little sensor for the price. It integrates well with my Arduino projects. The only reason for 4 stars instead of 5 is that the screw terminals are a bit small for thick wires, but it works fine with standard jumper wires.

5 FAQ

Q: Does this come with a casing or is it just the bare board?

A: This item is sold as a bare PCB module without an enclosure. You will need to mount it in your own project box or housing suitable for your specific environment.

Q: Can I power this with a 9V battery?

A: Yes, the module supports a wide DC input range including 5V and 12V. A 9V battery will work perfectly fine to power the logic and the relay coil.

Q: What is the difference between the DO and AO pins if present?

A: This specific model features a Digital Output (DO) which acts as a switch (High/Low) based on the threshold. Some similar modules have an Analog Output (AO), but this unit is designed specifically for simple On/Off relay control.

Q: How do I adjust the sensitivity of the light detection?

A: There is a blue potentiometer on the PCB. Use a small screwdriver to turn it clockwise to increase sensitivity (trigger in brighter conditions) or counter-clockwise to decrease it (trigger only in darker conditions).

Q: Can this module handle 220V AC loads directly?

A: The module itself operates on DC 5V or 12V. While the relay can switch higher voltages, please ensure the relay rating (usually 10A) is not exceeded and exercise extreme caution when dealing with mains voltage. We recommend using an enclosed box for high-voltage applications.

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