KEYFOB WIRELESS/868MHZ ARA24-W2 DAHUA

SOS emergency alarm.Frequency hopping function and two-way communication technologyCloud update and automatic recovery from update failure.Button: 4 (Home, Away, Disarm, and SOS)Low Battery AlarmCarrier Frequency: 868.0 MHz–868.6 MHzCommunication Distance: Up to 900 m in an open space, Two-wayEncryption Mode: AES128Power Supply: CR2032 batteryOperating Temperature: –10 °C to +55 °CBattery Life: 5 yearsProduct Dimensions: 60.0 mm × 39.5 mm × 15.0 mm