3pcs 5V/3.3V 3 Pin Photosensitive Sensor Module Light Sensing Resistor Module

Features 1 Adopt sensitive photosensitive resistance sensor2 Comparator output clean signal good waveform strong driving ability more than 15mA 3 Adjustable potentiometer can adjust the brightness of the light detection4 The working voltage is 3 3V 5V5 Output form DO digital switching output 0 and 1 and AO analog voltage output6 With fixed bolt hole easy to install7 Small size 3 2cm x 1 4cm PCB8 Use wide voltage LM393 comparator Instructions 1 The photosensitive resistance module is most sensitive to the ambient light It is usually used to detect the brightness of the light in the surrounding environment and trigger the microcontroller or relay module 2 the module in the ambient light brightness can not reach the set threshold DO end output high level when the ambient light brightness exceeds the set threshold DO end output low level 3 DO output can be directly connected with the microcontroller through the microcontroller to detect high and low levels so as to detect the environment light brightness changes 4 DO output can directly drive the relay module which can form a light control switch 5 small analog output AO can be connected with the AD module through the AD conversion can obtain more accurate numerical environmental light Wiring Instructions 1VCC connection power supply positive 3 3 5V2GND power supply negative pole3DO TTL switch signal output4AO analog signal output Usage Light intensity detection light intensity senso