LM393 3-Pin Photosensitive Sensor Module

The LM393 3-Pin Photosensitive Sensor Module is a reliable and efficient light detection module designed for smart electronics and automation projects. Built around the LM393 voltage comparator and LDR (Light Dependent Resistor), it accurately detects changes in ambient light intensity and delivers a digital output signal.

Operating at 3.3V to 5V, this module is ideal for use with Arduino, Raspberry Pi, ESP32, and other microcontroller boards. The sensor output goes LOW when the surrounding light exceeds the set threshold, making it perfect for smart lighting systems, solar tracking devices, automatic night lamps, and more.

The onboard potentiometer allows you to adjust the sensitivity based on your project needs. It features a power LED indicator and a digital output indicator LED, making debugging easy during prototyping.

Specifications :

1. LM393 based design.
2. It can detect ambient brightness and light intensity.
3. Adjustable sensitivity (via blue digital potentiometer adjustment).
4.  Operating Voltages – 0V to 5V, Adjustable trigger level from preset.
5. LEDs indicating output and power.
6. Operating Current is 15mA
   

   Key Features:

   • Operating Voltage: 3.3V–5V

   • Output Type: Digital (High/Low)

   • Built-in LM393 comparator

   • Adjustable sensitivity using potentiometer

   • Ideal for ambient light detection and automation

   • Compact size and breadboard-friendly design

How it works…?

1. Module light conditions or light intensity reach the set threshold, DO port output high when the external ambient light intensity exceeds a set threshold and the module’s D0 output low when the external ambient light intensity below a set threshold.
2. Digital output D0 directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes.
3. Digital output module DO  can directly drive the relay module, which can be composed of a photoelectric switch

Pins detail:

VCC ↔ 3.3V to 5V DC.
GND ↔ Ground.
DO ↔ Digital Output.

Package Include:

1x Digital LDR Sensor Module

Buy Digital LDR Photoresistor Sensor Module at online shopping store at cheap price. Here you get the best Analog LDR Sensor also. We deliver in Lahore, Karachi, Peshawar, Islamabad, Faislabad, Multan, Gujranwala, Quetta and all over Pakistan.

🔗 Explore More Sensors at ElectroWay:
https://electroway.org/product-category/electronics-components/sensors/

▶️ Watch How It Works on YouTube:
https://www.youtube.com/watch?v=zLT3S_-3dfY