● High accuracy and sensitivity
● Good anti-jamming capability
● Reliable stability and reproducibility
● Low quiescent current (4uA±2)，energy-saving,
long standby time
● Three leds to indicate different status: power
supply(green), alarm (red), fault (yellow)
● Calibrating
● Easy installation, portable,ideal for travelling
● Test/alarm locking/Manual Reset
● Memory Function
● Low battery warning
● Different alarm sound for different concentrations
● Amplifying circuit and sensor fault signal warning
● Cannot be fitted with battery missing
● End of alarm life warning