MQ-4 Methane liquefied Gas Sensor Module

Model: MQ-8 Hydrogen Gas Sensor Module
Brand Name: HAILANGNIAO

Module features:
It has good sensitivity to the detection of hydrogen.
input voltage: DC5V power consumption (current): 150mA
DO output: TTL digits 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively pollution-free), the maximum concentration voltage is about 4V
Using high quality double panel design, it has power indication and TTL signal output indication.
It has DO switching signal (TTL) output and AO analog signal output.
the TTL output effective signal is low level. (when the output is low, the signal lights on, can be directly connected to a single chip or a relay module).
To simulate the output voltage, the higher the concentration, the higher the voltage.
four screw holes are easy to locate;
The shape of the product: 32 (L) *20 (W) *22 (H)
Long term life and reliable stability