Hardware Features Serial Port 1, Protected Anti-error front and rear Function Key 6 Function Keys: Fire Alarm, Away Arming, Stay Arming, Disarming, Clearing and Confirm Electrical Features Battery Type 4 AA Batteries Power Supply 3 VDC Power Input Operating Humidity 10% to 90% (non-condensing) Operating Temperature -10 °C to +55 °C (-4 °F to +122 °F) Battery Life 3 Years Wireless Transmission RF Speed ​​10 kbps RF Power 10 dBm RF Frequency 433 MHz RF Modulation 2GFSK RF Distance 800 m (open area) Display Numeric Key 10 Keys: 0 to Up to 9 Indicator3 Status indicators: Power (green), Fault (orange) and Alarm (red)4 Partition indicators: Armed/Disarmed (blue) General Size (WxHxD)φ131.5mm (5.2"); Height: 23mm (0.9") Color White Device Management Tag supports standard IC card swipe Reporting method ProtocolHIK wireless protocol: access to wireless control panel, two-way communication