1,With LCD display & built-in keypad; 2,100 wireless / 8 wired ... : Intelligent automatic speech recognition: SOS alarm, fire alarm, gas leak, magnetic contact alarm, hall alarm, window alarm, balcony alarm, and perimeter alarm11. Timing defense ... .Technical parameters1. Input Voltage: DC12V 500mA2. Standby Current: 50mA3. Alarm Current: 450mA max4. Output current: DC12V 150mA5. Wireless Frequency: ...