16 Zone Wired and 30 Zone Wireless GSM & PSTN can be extend to 248zones bus line by mould. Power supply：AC220V+10% Static Consumption Current ≤150mA Power ≤1W Alarm Output:≤800mA, 12V Output Voltage: DC12V～15V Wireless Receiving Frequency: 315MHZ/433MHZ optional Working Temperature：-10 ～ 55°C Working Humidity:40 ～ 70%
GSM alarm system AJ390
99 wireless zones and 8 wired zones alarm system Input power: DC12V 500mA Standby power consumption: 50mA Alarm current: Max 450mA Output current: DC12V 150mA Radio frequency: 315MHz/433MHz Encoding: 2262 IC / 4.7MΩ ;Alarm sound: 110dB Back-up battery: AAA 7.2V ;Clock battery: Zn/Ago battery3.0V Suitable temperature: -20 ℃ ～ +55℃ ;Suitable humidity: 40%～ 80%