Ajax Wireless Security Opening Detector "DoorProtect", White//https://ajax.systems/products/doorprotect/Installation method: IndoorsCompatibility: Operates with all Ajax hubs, range extenders, ocBridge Plus, uartBridgeSensing element:Reed switchAlarm signal delivery time: 0.15 sActivation threshold: Small magnet — 1 cm; Big magnet — 2 cmPower supply: Battery: CR123A battery, 3 VBattery life: Up to 7 yearsTemperature sensor: AvailableOperating temperature range: From -10°С to +40°СPermissible humidity: Up to 75%Sensor resource: 2,000,000 openings