SENS-MQ-138 Formaldehyde Sensor Module MQ137 for home, factory and atmospheric environment.
Specifications:
Size：32mm X22mm X27mm L x W x G
Main chip：LM393.
Operating voltage: DC 5V
Features：
1、With signal output indicator light indication；
2、Dual signal output (Analog output and TTL Level output）；
3、TTL output effective signal is low. When the output is low, the signal light is on. Can be connected to single chip Microcomputer IO Mouth）
4、Analog output increases with concentration. The higher the concentration, the higher the voltage；
5、It has high sensitivity for formaldehyde - suitable for the detection of aldehydes, alcohols, ketones, and aromatic compounds. Test concentration range of gas sensors:
Benzene 1 to 100ppm
Toluene 10 to 100ppm
Methanol 5 to 100ppm
Alcohol 30 to 300ppm
Acetone 10 to 300ppm
Formaldehyde 1 to 10ppm
6、It has long-term service life and reliable stability.；
7、Fast response recovery features；
8、With mounting hole. Easy to fix and install；
9、Probe plug-in design. Convenient Test。
WARNING
