MQ-135 High Sensitivity Noxious Gas Detection Module (ER-SEE00808M)
Description
The main chips of MQ-135 module are LM393, MQ135 gas sensing probe. The analog output voltage is influenced by the concentration, the higher the concentration, the higher the voltage. The module is double-panel design, with power indicator and TTL signal output display.
It is widely used in air quality control equipments for buildings/offices, are suitable for detecting of NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
Features
Fast response and high sensitivity
It has Dual signal output and TTL level output
Stable and long life
Simple drive circuit
Specifications
Detection concentration: 10-1000ppm
Dimension: 32(L) X 20(W) X 22(H)
Input voltage: 5V DC
Output voltage (DO): TTL digital o and 1
Output voltage: (AO): 0.1-0.3V
Connection method
VCC: connect to positive power supply (5V)
GND: connect to negative power supply
DO: TTL level output
AO: analog signal output
Package list
MQ-135 high sensitivity noxious gas detection module