Overview

Sensitive for carbon monoxide
Output voltage boosts along with the concentration of the measured gases increases
Fast response and recovery
Adjustable sensitivity
Signal output indicator

Specifications

Power: 2.5V ~ 5.0V
Dimension: 40.0mm * 21.0mm
Mounting holes size: 2.0mm

Applications

Carbon monoxide monitor

How to Use
In the case of working with a MCU:

VCC 2.5V ~ 5.0V
GND power supply ground
AOUT MCU.IO (analog output)
DOUT MCU.IO (digital output)

Development resources:demo codes, schematic, datasheets, etc.Wiki:www.waveshare.com/wiki/MQ-7_Gas_Sensor
Package Content

MQ-7 Gas Sensor x1
4-pin custom connector jumper wire x1