GAS alarm/ Carbon Monoxide alarm

MCU expert algorithm software to prevent the most gas alarm fault.
Operating Voltage: AC90V~270V
Alarm Horn: 85dB at 3m (10 feet)
Operating Temperature: -10°C to +50°C
Humidity Range: 5%-95% relative humidity(RH)
Sensor: Electrochemical
Easy to install with mounting base included
Test button and LED allows simple check on alarm operation
Unit Dimensions: 115mm (H) x 72 mm (W) x 45 mm (D)
GAS alarm/ Carbon Monoxide alarm