Humidity sensor module HR202 humidity mo...

Humidity sensor module HR202 humidity module humidity detector (4-wire)

Purpose:
Humidity testing, humidity sensor, ambient humidity detection

Module Features :
1 , using high quality HR202 humidity sensor ;
2 , the comparator output signal clean waveform is good , driving ability, than 15mA.
3 , adjust the temperature distribution bit detection threshold
4, Working voltage 3.3V-5V
5 , the output form : DO digital switching outputs ( 0 and 1 ) and AO analog voltage output
6, with bolt holes for easy installation
7 , a small board PCB size : 3.2cm x 1.4cm
8 , using a wide voltage LM393 comparator

Product wiring instructions :
1, VCC positive power supply 3.3-5V
2, GND tied to power supply
3, DO TTL switching signal output
4, AO small plate analog output ( voltage signal )

Module for use:
1, the humidity sensor module is sensitive to humidity , generally used to detect ambient humidity ;
2, through the adjustment of the potentiometer , can change the humidity detection threshold ( that is, control humidity values ​​) , if necessary to control humidity of 60 %, the humidity in the corresponding module is set to its green light , DO output is HIGH level falls below the set humidity value, the output is high , the green light does not shine ;
3, DO output can be directly connected with the microcontroller through the microcontroller to detect high and low , thereby detecting the humidity changes ;
4, DO OUR outputs can directly drive the relay module , which can be composed of a humidity switch, control related equipment in proper working environment ;
5 , small plates analog output AO can shop AD module connected through the AD converter , you can get more accurate humidity values ​​;