Features AI Face Identification Motiion Detection and SMS Video Push Infrared Night Vision Free Cloud Video Storage 720P HD Resolution Real time Talking Support up to 4 users connect at the same time Transmitter rangee is more than 50 meters Specification Name Xiaomi Video DoorbellModel FJ02MLWJBattery AA LR6 1 5VWiFi conenction Wi Fi 433MHz RFResolution 1280 720PLens angle 105°Aperture F2 0IR light 4pcs 850nmWorking temperature 0 to 45℃System Android 4 4 or iOS 9 0 or above versionExecutive standard GB T 31070Name Xiaomi ReceiverModel FJ03MLNJPower Supply 100 240V 50 60HzWiFi connection 433MHz RFWorking temperature 0 to 45℃ Package includeds 1 x Xiaomi Video Doorbell Order the doorbell separately 1 x Xiaomi Receiver Order the receiver separately 1 x User ManualClick to GET Upgrade Version Voice charger function Details pictures