LDR Photoresistor Light Sensor Module – LM393, Analog & Digital Output

Name: LDR Photoresistor Light Sensor Module – LM393, Analog &amp; Digital Output
SKU: LDR-LM393-LIGHT-SENSOR
Availability: InStock

This LDR photoresistor light sensor module is designed to detect ambient light intensity and brightness changes. It can be used for smart lighting, day/night detection, automation projects, robots, alarms, display control and simple light-based switching.

The module uses a light-dependent resistor to detect brightness. As the light level changes, the sensor output changes as well. It also includes an LM393 comparator and an adjustable potentiometer, allowing the digital output threshold to be adjusted.

The module provides both analog and digital outputs. The analog output can be read by a microcontroller ADC pin to measure relative light intensity, while the digital output can be used as a simple light/dark trigger.

It is suitable for ESP32, Arduino, Raspberry Pi, ESPHome and other microcontroller projects.

Key Features

LDR photoresistor light sensor module
Detects ambient light and brightness changes
LM393 comparator circuit
Adjustable sensitivity using onboard potentiometer
Analog output for relative light level measurement
Digital output for adjustable light/dark threshold detection
Works with ESP32, Arduino, Raspberry Pi and other microcontrollers
Useful for smart lighting, day/night detection, automation and IoT projects

Typical Applications

Automatic light control
Day and night detection
Smart home automation
ESPHome light-level projects
Arduino and ESP32 sensor projects
Robot light detection
Alarm and trigger circuits
Display brightness control experiments

Package Includes

1 × LDR photoresistor light sensor module

Product Information Sheet

Attribute	Value
Sensor type	LDR / photoresistor
Comparator IC	LM393
Outputs	Analog output + digital output
Digital threshold	Adjustable with onboard potentiometer
Working voltage	3.3V–5V DC
Pins	VCC, GND, DO, AO
Output type	Analog voltage + TTL digital signal
Typical PCB size	Approx. 32 × 14 mm
Typical use	Light detection, day/night detection, smart lighting, Arduino/ESP32 projects
Package includes	`1 × LDR photoresistor light sensor module`

Shipping and Return

Shipping:

You can expect us to dispatch your order within 1-2 days (including weekend)
90% of packages shipped in Denmark, reach the day after it has been dispatched
90% of packages to Germany, The Netherlands, Sweden and France takes 2-3 days but in some cases more than 4 days.
90% of packages to other countries takes 3-4 days but in some cases more than 5 days.

Return:

You have 14 days to change your mind and return the product
Return shipping fee is to be paid by the customer but we take our customer satisfaction seriously so write to us and we figure out a solution that fits you best!