Size: 32mm X22mm X27mm length X width X height
The main chip: LM393, ZYMQ-4 gas sensor
Operating voltage: DC 5 Volt
Indication of the signal output.
Dual signal output (analog output, and TTL level output)
TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage.
Of methane gas, the natural gas has better sensitivity.