LM393 Photosensitive Light-Dependent Control Sensor LDR Module

The LM393 Photosensitive Light-Dependent Control Sensor LDR Module operates using a high-quality LM393 voltage comparator and a photosensitive resistance sensor. It detects ambient light intensity and adjusts its output accordingly. The module outputs a digital signal (high or low) based on light intensity detected, and an analog signal that represents the precise light intensity value.

Photosensitive resistance sensor

LM393 voltage comparator

• Exceed Voltage Limits: Do not supply the module with more than 5V or less than 3.3V to avoid damaging the unit.,
• Expose To Extreme Conditions: Avoid exposing the sensor to extreme light conditions beyond its handling capacity or to moisture and dust.

• Connect To Appropriate Power Supply: Ensure the module is connected to a power supply between 3.3V and 5V.,
• Adjust Sensitivity As Needed: Use the onboard potentiometer to adjust the module's sensitivity to light.,
• Use Digital And Analog Outputs: Utilize the DO port for digital signal output and the AO port for more precise analog output.

• Maximum: 15mA

• Minimum: 3.3V,
• Maximum: 5V

• Vcc: Connect to +ve of the power supply (3.3V to 5V).,
• Gnd: Connect to ground of the power supply.

• D0: Digital output signal, can drive devices like a relay module directly.,
• A0: Analog output signal, connects to an AD module for precise light intensity measurement.

8 mm

33 mm

4 × 3 × 2 cm

0.005 kg

4 g

14 mm