Description

Specifications of MQ7 Gas Sensor:-

Size: 35mm × 22mm × 18mm
Detection of gas: carbon gas
Heating voltage: 5 ± 0.2V (AC · DC)
Working current: 140mA
Loop voltage: 10V (maximum DC 15V)
Load resistance: 10K (adjustable)
Detection concentration range: 10-1000ppm
Clean air voltage: ≤1.5V
Sensitivity: ≥3%
Response time: ≤1S (preheat 3-5 minutes)
Response time: ≤30S
Element power: ≤0.7W
Working temperature: -10 ~ 50 ℃ (nominal temperature 20 ℃)
Humidity: 95% RH (nominal humidity 65% RH)