Software Features Anti-jamming Alarm ProtocolRS-485 Hardware Features Numeric Key 12: 0 to 9, * and # Function Key4 Function Keys: Project, Panic, Status and Bypass Indicator Control Panel Status Indicator: 2, Work (Red/Green), Arm/Disarm (Red/Green) Zone Status Indicator: 4, Red/Green Electrical Features Power Supply DC 12V Display Display LED General Operating Temperature -10 °C to +55 °C (-4 °F to +122 °F) Operating Humidity 10% to 90% (non-condensing) Dimensions (WxHxD)133.9 mm (5.3") x 74.9 mm (1.9") x 27.7 mm (1.1") Weight 149 g