Product description

MEMS smoke gas sensor GM-202B uses MEMS process to produce micro hotplate on Si based substrate. The gas sensing material used is a metal oxide semiconductor material with lower conductivity in clean air. When the sensor is in the gas environment, the conductivity of the sensor changes with the concentration of the detected gas in the air. The higher the concentration of the gas, the higher the conductivity of the sensor. A simple circuit is used to convert the electrical conductivity into an output signal corresponding to the gas concentration.

Characteristic

MEMS process, solid structure
low power consumption
high sensitivity
Fast response recovery feature
Simple drive circuit

Types of gas tested:

Smoke :10 - 5000ppm

Main application:

Apply to home smoke alarm , industrial smoke alarm , and protable smoke detector