Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 12V
Load Capacity	10A Relay Output
Sensor Type	Photoresistor (LDR)
Detection Mode	No-Light Activation
Adjustment	Potentiometer for Sensitivity
Indicator LED	Yes, Power and Status
PCB Dimensions	32mm x 14mm
Mounting Holes	3mm Diameter
Response Time	< 1 Second
Application	Street Lights, Garden Lamps

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable night switch

I use this to control a small water pump for my fountain at night. It handles the relay click quietly and switches precisely at dusk. Highly recommended for hobbyists.

Anonymous

Mar 28, 2026

Rating: 5/5

Easy to integrate

As someone new to electronics, I found this very easy to use. The labels on the board are clear, and the potentiometer makes it simple to calibrate for different lighting conditions.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for my garden lighting project

This module works exactly as described. I connected it to a 12V LED strip, and it turns on automatically when the sun goes down. The sensitivity adjustment is very smooth.

Anonymous

Mar 02, 2026

Rating: 4/5

Good value but needs careful wiring

The sensor is responsive and reliable. Just make sure you double-check your polarity before connecting power. Once set up, it has been working flawlessly for weeks.

Anonymous

Mar 02, 2026

Rating: 5/5

Exactly what I needed

Compact size fits perfectly inside my junction box. The no-light sensing logic is inverted correctly for my setup, turning loads on when it gets dark without any extra coding.

Anonymous

Mar 01, 2026

Rating: 4/5

Solid performance

Works well for low voltage applications. The relay feels sturdy. I deducted one star only because the mounting holes are a bit tight for standard screws, but otherwise great.

5 FAQ

Q: Is there a delay feature to prevent flickering?

A: This basic model does not have a built-in time delay circuit. It reacts almost instantly to light changes. For flicker prevention, you may need to add an external capacitor or use a microcontroller.

Q: Can this module handle 220V AC directly?

A: No, the control circuit requires DC 12V input. While the relay contacts can switch higher voltages depending on the specific relay rating, the module itself must be powered by 12V DC.

Q: Does this come with a waterproof enclosure?

A: No, this listing is for the bare PCB module only. If you plan to use it outdoors, you must install it in a suitable waterproof enclosure.

Q: What is the maximum current the relay can switch?

A: The onboard relay is rated for up to 10A. Please ensure your load does not exceed this limit to prevent damage to the module.

Q: How do I adjust the light sensitivity threshold?

A: There is a blue potentiometer on the board. Turn it clockwise to increase sensitivity (activate in brighter conditions) or counter-clockwise to decrease it (activate only in darker conditions).

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