4.59 €
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12V Light Sensor Relay Switch for Arduino and Automation
Brand: satkit
Save 7% Was: 4.93 €
4.59€
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12V Light Sensor Relay Switch for Arduino
This 12V light detection relay module lets you automate light control based on ambient brightness. It uses a photoresistor to detect light intensity and a high-quality relay to switch AC and DC electrical loads on or off.
Main features:
- Photoresistor sensor for accurate light intensity detection.
- Relay with maximum load capacity: AC 0-250V/10A and DC 0-30V/10A.
- Potentiometer to adjust sensitivity and relay trigger threshold.
- Smart regulation design that avoids issues at critical light levels.
- LED indicators: red for power and blue for relay status.
- 12V DC operation with reverse polarity protection.
- Compact dimensions: 5.0 cm x 3.0 cm x 1.8 cm, with 4 mounting holes for easy installation.
- Includes 30 cm thermal fuse sensor for added safety.
Typical applications:
- Automatic switching of street lights and outdoor lighting.
- Automatic lighting control in homes and Arduino projects.
- Automation and control equipment in vehicle supplies.
- Light control systems for energy saving and comfort.
Instructions for use:
The module detects the ambient light level. When brightness falls below the threshold set with the potentiometer, the relay activates, closing the circuit and turning on the connected load. When the light level rises above the threshold, the relay deactivates, turning the load off. It has common, normally open and normally closed terminals for flexible connections.
Technical specifications:
- Operating voltage: DC 12V.
- Operating current: less than 50mA during relay activation, less than 5mA at rest.
- Maximum load capacity: AC 0-250V/10A, DC 0-30V/10A.
- Recommended temperature range: -20°C to 60°C.
- Maximum capacity on normally closed port: DC 0-28V/10A, AC 0-125V/10A.
Package contents:
- 1x dusk switch with relay module and light detection sensor.
This 12V dusk switch is an efficient and affordable solution for Arduino automation projects and lighting control at home or outdoors. Its compact, simple design makes it easy to integrate into multiple applications.
- Adjustable photoresistor sensor for light detection
- High-quality relay with max load AC 250V/10A and DC 30V/10A
- Potentiometer to adjust sensitivity and trigger threshold
- LED indicators for power and relay status
- 12V DC operation with reverse polarity protection
- Compact size with 4 mounting holes for easy installation
- Recommended temperature range from -20°C to 60°C
- Ideal for home lighting automation and Arduino projects
Customer Questions & Answers
What are the main applications and advantages of using this dusk-to-dawn switch compared with a conventional timer?
The dusk-to-dawn switch allows automatic switching of electrical devices based on ambient light, ideal for street lights, outdoor lighting and automated systems. Unlike a timer, it responds in real time to changes in brightness (dawn/dusk), avoiding daily adjustments and improving energy efficiency where natural light varies due to weather or seasonal conditions.
What voltages and load types does the included relay support, and what are its operating limits?
The relay supports loads of up to 250 V AC or 30 V DC, with a maximum current of 10 A in both cases. These values indicate the maximum switching capacity. Exceeding these limits may cause relay failure or create risks of overheating and permanent damage.
What are the dimensions, main materials and exact contents of the box?
The module measures 50 mm x 30 mm x 18 mm and is mainly built from a fibreglass PCB, standard electronic components and a partial plastic housing over the relay. It includes the relay module, a 30 cm wired photoresistor sensor, and no additional tools are required for setup.
What precautions should be taken when installing and connecting the module to 220V AC systems, and is there reverse polarity protection?
When operating with 220 V AC, it is essential to disconnect the power during installation, use suitable wiring and insulation, and ensure the unit is mounted on a non-conductive surface using the 4 fixing holes. The module has reverse polarity protection on the 12 V input, but the relay switches loads directly; it does not protect against high-voltage wiring errors. It is recommended to follow local electrical regulations and, if necessary, consult a certified electrician.
What is the 12V light sensor relay switch used for?
It is used to automate lights on and off according to ambient light levels, ideal for street lights, outdoor lighting and Arduino projects.
How do you adjust the light sensor sensitivity?
Sensitivity is adjusted using a potentiometer that lets you set the light threshold for activating or deactivating the relay.
What type of loads can this module control?
It can control AC loads up to 250V/10A and DC loads up to 30V/10A.
Is it compatible with Arduino systems?
Yes, it is designed to integrate easily into Arduino projects and other automation systems.
What is included in the package?
It includes a dusk switch module with relay and light detection sensor.
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