LDR sensor module is used to detect the intensity of light. ... The greater the intensity of light, the lower the resistance of LDR. The sensor has a potentiometer knob that can be adjusted to change the sensitivity of LDRtowards light. Specification: Input Voltage: DC 3.3V to 5V.

Features:

Can detect ambient brightness and light intensity

Adjustable sensitivity (via blue digital potentiometer adjustment)

Operating voltage 3.3V-5V

Output Type:

 Analog voltage output -A0

Digital switching outputs (0 and 1) -D0

With fixed bolt hole for easy installation

Small board PCB size: 3cm * 1.6cm

Power indicator (red) and the digital switch output indicator (green)

Using LM393 comparator chip, stable

Pin outs:

External 3.3V-5V VCC

External GND GND

DO digital output interface, a small plate (0 and 1)

AO small board analog output interface