Description:
1: Wide range of applications
2: Small appearance
3: Long service life
4: Fast response time
5: With mounting holes for easy permanent installation
The module comes with MQ138 gas sensor and circuit, easy to plug and use, just connect the power supply and the module can be connected with the microcontroller.
Working voltage: DC 5V
Onboard power and digital signal LED indicators
2-channel signal output (analog output, TTL level output)
TTL output valid signal is low level; (low output signal light, can be connected to the IO port of the microcontroller)
The analog output increases with the concentration, the higher the voltage, the higher the concentration The higher the sensitivity of aldehydes, alcohols, ketones, and aromatic compounds
Has long life and reliable stability
Quick response feature
With mounting holes for permanent installation
Main chip: LM393, formaldehyde sensing probe
Dimensions: 35mm x 21mm x 28mm
Weight: 11 grams
Package included:
1*Sensor
