Product Description
The MQ-7 CO Carbon Monoxide Coal Gas Sensor Module measures the CO concentration in the air and outputs an analog voltage that corresponds to the level of CO. It can detect CO levels ranging from 10 to 10,000 ppm.
The sensor works at temperatures between -10 and 50°C and uses less than 150 mA at 5 V.
The module has both digital and analog outputs. The digital output threshold can be easily adjusted with the preset on the board. The MQ-7 sensor module is compatible with Micro-controllers, Arduino and other devices.
Standard Test Conditions
Temperature: 20°C ± 2°C
Humidity: 65% ± 5% RH
Standard Test Circuit: Vc: 5.0V ± 0.1V; Vh(high):5.0V±0.1V
Vh(low): 1.5V±0.1VÂ
FeaturesÂ
- The voltage of the analog output increases as the concentration increases.
- The sensitivity of the carbon monoxide detection is high.
- There are four screw holes for easy positioning.
- The service life is long and the stability is reliable.
- The response and recovery characteristics are fast.
specification-
Operating voltage (v) | DC 5 |
---|---|
Range | 10 ~ 1000 ppm |
Characteristic gas | 100 ppm CO |
Sensitivity | ≥ 3%. |
Return time | ≤ 30 sec |
Heating resistance | ± 31 Ω |
Heating current | ≤ 180 mA |
Heating voltage | 5.0V ± 2V / 1.5 ± 1V |
Heating power | approx. 350 mW |
Ambient temperature (°C) | -20 ~ + 50 |
Humidity | ≤ 95% RH |
Oxygen content | 21%. |
Length (mm): | 35 |
Width (mm) | 20 |
Height (mm) | 11 |
Weight (gm) | 20 |
Shipping Weight | 0.01 kg |
Shipping Dimensions | 4 × 4 × 4 cm |
Package Includes
- 1 x MQ-7 CO Carbon Monoxide Coal Gas Sensor Module
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