It can be used independently to alarm, or can be used with the system to send the signal to the main panel.Self-detecting,
with high reliability,-10°C - 45°C working temperature, 315/433.92MHz Power supply: AC 220V; AC230-240V ; DC9V battery RF output of power: 5mW Working frequency: 315MHz/433MHz Alarm limit: Coal gas2000ppm(30% tolerance); Solid petroleum5000 ppm(30% tolerance) ; Natural gas2000ppm(30% tolerance) Working current: Normal 150mA; Alarm200mA Working temperature:-10 ~ 50 degree Insulation: Insulation resistance>50ohm; Electric strength>1500V AC Relative humidity: < 90rh
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