Chatthen Alarm System for Home Security, Door Alarm Window Alarm Sensors, APP Remote Control, WiFi +RF Receiver Compatible with 200 Accessories (1 Receiver & 3 Door Sensor & 1 Remote Control) - CHAF821

• Multi-functional Burglar Alarm: The Tuya receiver is compatible with Wifi 2.4GHz, there are four modes of arming, disarming, at home and SOS, use the remote control or APP to switch modes. APP Remote Monitoring: Download Smart Life or Tuya Smart APP for free on your mobile phone, once the accessory triggers the receiver will ringing and the APP receive the alarm notification at the same time, in addition, you can achieve the accessory management, mode switching, timed alarms, ringtone switching and other functional settings in the APP. Wide Range of Control: Receiver supports 200 wireless learning accessories, such as: remote controller, door alarm, doorbell, infrared sensor, panic button, water leak detector, etc., according to your needs with any. Adjustable Volume: This door alarm with chime has 4 adjustable volume levels, from 0-90 dB silent mode, 0 dB won't disturb sleeping babies. The receiver has a memory function, maintains the previously set tone when you plug it back in. Please Note: The receiver only supports 2.4GHz Wifi, does not support 5GHz.The package includes English manual, 1 receiver, 3 door alarms, 1 remote control, a USB cable and adapter. The receiver needs to be connected to the power supply to use, Installation of batteries is not supported, the door alarm needs to be installed with 2*AAA batteries, the package does not include batteries, please buy yourself.