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ACJ Wifi TUYA Intelligent Doorbell Welcome Home 433MHz Door Bell Chime Security Alarm App Remote Control Wireless Smart House
Door bell alarm 2-in-1Graffiti APP: Stable server, strong operating experience, remote alarmPower off memory: All settings are still saved after power offEasy installation: 3M sticker installationBackup lithium battery power supply: ultra long range5-speed music settings: meet the volume requirements of different occasions30 ringtones for free selection: can be used for multi zone differentiationProduct parameters:Power supply: 110/220VACBackup battery: 3.7V/500mAh lithium batteryWorking current:<100mAWi-Fi: IEEE802.11b/g/nWorking temperature: -10~55 ℃