Product List Gas Detectors and control Smoke Alarms Gas Alarms Single Gas Detectors Alcohol Breath tester Household Alarms for Air Purity  Fixed Controller Systems Fixed Monitoring Systems Gas Analyzer Fast Cut-off Valve Household Annunciator Sensor&Module Sensor PCB Module Special gas                                                 Gas Alarm            GA-27 specification: Type:Single type, Immediacy alarm type, Diffusion type, Catalytic combustion type, Power:AC 220V, 60Hz Applicable gases:LPG & LNG, Urban gases(Heavy and Light) Power consumption: 3W Alarm concentration: LPG, Urban gas(Heavy) : 0.06~0.45% LNG, Urban gas(Light) : 0.06~1.25% Alarming method:Yellow LED blinks and buzzer sound                   GA-28 　 specification: Induced Gas ： Natural Gas Power Input ：AC 220V 50Hz Or DC 12V Buzzer Level ：≥70dB/m Alarm Density ：15% LEL Working Temperature ：-10℃ to + 40℃ Working Humidity ：≤90% RH Alarm Density Error ：±5% LEL Alarm Mode ：Flash & sound alarm /Shut off Gas Valve/ Network Alarm Signal Power Consumed ：≤5W Size ：120 * 70* 44mm 　 　 　            GA-29 specification: MCU control, Reliable without false alarming Locale sound and light alarming Drive Long-distance Alarming System Optional function for relay output ,valve socket Ventilate good air circulation or shut off gas supply link equipment Operating Voltage： AC220V±10%, 60HZ Power Consumption：≤3W Operating Temperature： －10℃～50℃ Relative Humidity：＜95％RH

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