Lm393 LDR Sensor Module
The LM393 LDR Sensor Module utilizes a superior LM393 voltage comparator. It can be easily installed and features a sensitive photosensitive resistance sensor, providing a clean and precise waveform for the comparator output signal.

The adjustable potentiometer allows for a driving ability of 15mA and can regulate the brightness of the detected light. This module operates within a working voltage range of 3.3V to 5V, producing a digital switch output. Its sensitivity to light makes it suitable for detecting ambient brightness and intensity.

In the absence of light or sufficient intensity, the DO output will be at a high level. On the other hand, if the light surpasses this value, the DO output will be low. The digital DO output can easily connect to a microcontroller which can then detect whether it is at a high or low level, allowing for detection of changes in environmental light.

This board’s digital output DO port allows for direct connection with our relay modules, which are currently on sale in our store. Additionally, it can serve as a photoelectric switch. The analog output AO can be connected to an AD module for more accurate measurement of light intensity via the converter.

The Pin on the Interface:
The VCC is our power supply.
Ground, or GND for short.
The signal output in digital form.
The signal output is in analog form.
Powerful illumination, LED lighting, emitting a lower intensity.
Dim illumination, LED disabled, elevated output signal.
Adjustable is the sensitivity.
Characteristics of Lm393 LDR Sensor Module:
Included in the package are screws for mounting.
Simple to set up
Indicator light for signal output.
The 4 PIN LDR module.
Capable of sensing changes in surrounding light levels and adjusting sensitivity with the use of a blue digital potentiometer.
The digital switch output (0 and 1) is compatible with Arduino, Raspberry, and other microcontroller boards. It also has an analog voltage output (AO).