Get Mobile Notifications When an Alarm Is TriggeredArm & Disarm the Alarm with The Ring App or KeypadContact Sensor Notifies You If a Dooror a Window Has Been OpenedPet Friendly Motion SensorRealtime NotificationsWorks with Amazon Alexa & Samsung SmartThings24-Hour Backup BatteryOptional Cellular BackupOptional Assisted MonitoringEthernet, Wi-Fi, Z-Wave & Cellular Backup ConnectivityBox Contents:Base StationKeypadContact SensorMotion DetectorRange ExtenderColour: WhiteH170 x W170 x D37 mm (Base Station)