Description
Reviews
| 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 |
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.
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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