BroadLink DS4 Wireless Smart Security Door Open Contact Sensor Compatible with Alexa and Google Assistant S3 HUB Require

BroadLink Smart Door Sensor DS4 FC S3 Hub Required AAA 2 battery not including Detects the opened closed status of door window and triggers devices and scenes for home automation It also monitors unauthorized entries and alerts you on phone with notifications Activate scenes and control devices upon open closed detection Works with other brands in Alexa IFTTT APP Push notification for unauthorized entries Changeable battery with low battery notification ModelDS4 FCBatteryAAA 2 Not Including CertificationContains FCC ID 2ATEV BL3358 PCEROHSEst battery life1 yearWorking Related Humidity≤90 RHWorking Temperature 10°C 55°C Supported OSAndroid 5 1 iOS 11 and aboveCommunication Mode2 4GHzPackage Included 11 x BroadLink Smart Door Sensor DS4 FC 21 x BroadLink Smart Door Sensor DS4 FC1 x BroadLinkS3 Hub