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Home > Products > Stand Alone Alarm > GAS & CO Combination > GC-78

* Excellent Reliability and High Stability
* Double Electrochemistry Sensors inside, one is for Gas, another one is for CO
* Self Test Function
* Visual and Audible Alarm Function
* Sensor Fault Self Test Function
* Low Power Consumption
* Able to detect Coal Gas, LPG, Natural Gas and CO

Electrochemistry Co and Gas
Power Supply
9V battery back-up
battery life is 1 year
Alarm density
CO: 150±10ppm; Coal gas:1000~5000ppm
Liquid petroleum gas: 1000~5000ppm
Natural gas: 1000ppm~5000ppm
Rated Current
Static current: 40mA, Alarm Current: 80mA
Working Humidity
20% to 90%R.H
Responding time
Gas 30S
Working Temperature
-10 to 60
Sound Level
Alarm  output
Frequent on or off signal,control exhaust fan,
electrical magnetic valve signal

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