Photosensitive Resistance Sensor Relay Module 5V | LDR Light Sensor Relay Switch Board Automatic Day Night Control

Photosensitive Resistance Sensor Relay Module 5V | LDR Light Sensor Relay Switch Board Automatic Day Night Control 

The Photosensitive Resistance Sensor Relay Module is an automatic light control switch board designed to turn electrical devices ON or OFF depending on ambient light level. The module uses a photoresistor (LDR) sensor to detect brightness and activates the relay when the light crosses the preset threshold.

The sensitivity can be adjusted using the onboard potentiometer, allowing accurate control for different lighting conditions. This module is ideal for automatic street lights, smart lighting systems, home automation, Arduino projects, IoT systems, and industrial automation.

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Features

• Photosensitive resistance relay module
• Operating voltage: 3.3V – 5V DC
• Built-in LDR light sensor
• Adjustable brightness sensitivity
• Automatic relay switching
• High power relay output (10A)
• Supports AC and DC load
• LED status indicator
• Compact and durable PCB
• Easy wiring and installation

Applications

• Automatic street light control
• Garden and outdoor lighting
• Home automation projects
• Arduino / ESP32 / IoT projects
• Smart lighting systems
• Industrial automation
• Day night switch circuit
• DIY electronics projects