LDR Light Sensor Module LM393 - Photosensitive Light-Dependent Control Sensor module
LDR is an acronym for Light Dependent Resistor. LDRs are tiny light-sensing devices also known as photoresistors. An LDR is a resistor whose resistance changes as the amount of light falling on it changes. The resistance of the LDR decreases with an increase in light intensity, and vice-versa. The LDR Sensor Module is a light intensity detection sensor based on a Light Dependent Resistor (LDR). It outputs an analog signal relative to the ambient brightness, making it perfect for Arduino, ESP32, Raspberry Pi, and other microcontroller-based automation and IoT projects.
₹ 35
₹ 89
| : | |
| Made In : | India |
The LDR Light Sensor Module is a simple and effective light detection module based on a Light Dependent Resistor (LDR) and LM393 comparator. It detects ambient light intensity and provides both analog and digital outputs, making it ideal for automatic lighting, smart systems, and Arduino-based projects. With adjustable sensitivity, it can be used for day/night detection and light-triggered automation.
Key Features
- Uses LDR (Light Dependent Resistor) for light sensing
- Dual output: Analog (A0) and Digital (D0)
- Adjustable sensitivity via onboard potentiometer
- LM393 comparator for digital output
- LED indicators for power and detection
- Easy interface with Arduino, ESP32, Raspberry Pi
- Compact and low-cost module
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | LDR (Photoresistor) |
| Comparator IC | LM393 |
| Operating Voltage | 3.3V – 5V |
| Output Type | Analog + Digital |
| Sensitivity | Adjustable |
| Interface | 4-pin (VCC, GND, A0, D0) |
| Detection Type | Light intensity |
| Indicator | Power & Output LED |
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