Reference: RBD-3694
Brand: DFRobot
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The 2 Channel LDR Photosensitive Resistance Sensor Module is a reliable and efficient solution for projects requiring light intensity detection and control. Featuring two independent light-dependent resistors (LDRs), the module can detect light levels across dual sources, making it perfect for line-following robots, light-tracking systems, or automatic illumination control. The onboard LM393 comparator ensures a clean digital output signal and strong drive capability (>15mA), while a built-in potentiometer allows users to easily adjust sensitivity to different lighting conditions. With a digital output (0/1) that interfaces directly with Arduino, ESP32, and other 3.3V–5V microcontrollers, this module offers a plug-and-play approach to light-based automation. Compact and easy to mount with bolt holes, it’s an essential component for robotics, smart lighting, and ambient light sensing applications. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Dual LDR Detection: Two photosensitive sensors for simultaneous light intensity monitoring.
LM393 Comparator: Ensures clean, noise-free signal output with strong current drive.
Adjustable Sensitivity: Onboard potentiometer for precise light threshold calibration.
Digital Output: Simple 0/1 switch output compatible with digital logic systems.
Microcontroller Compatible: Works with 3.3V–5V platforms like Arduino, ESP8266, and Raspberry Pi.
Compact Design: Lightweight PCB with mounting holes for easy integration.
Reliable Performance: Fast response and high accuracy for real-time light measurement.
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Automatic Lighting Systems: Activate lamps or devices based on ambient light.
Robotics and Automation: Ideal for line-following or light-tracking robots.
Smart Home Projects: Detect sunlight or brightness for energy-saving control.
Security Systems: Trigger alarms or sensors based on light changes.
Educational Projects: Demonstrate photoresistor and comparator-based light detection.
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| General Specifications | |
| Model | 2 Channel LDR Sensor Module |
| Number of Channels | 2 |
| Sensor Type | LDR (Light Dependent Resistor) |
| Comparator | LM393 Wide Voltage Comparator |
| Operating Voltage | 3.3V – 5V |
| Output Type | Digital (0 and 1) |
| Current Drive | >15mA |
| Sensitivity Adjustment | Potentiometer (onboard) |
| PCB Size | 3.2 × 1.7 cm |
| Mounting | Bolt holes for easy installation |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi |
| Applications | Light detection, automation, robotics |
| Shipment Weight | 0.0042 kg |
| Shipment Dimensions | 4 × 2 × 2 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x 2 Channel LDR Photosensitive Resistance Sensor Module
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