UKG Smart Home | Indoor 2.4G RF Wireless USB Doorbell (with UKG BELL-1C/1S) White Smart home

White Indoor 2.4G RF Wireless USB Doorbell (for UKG BELL-1C/1S)USB DC 5V/1A power supplyfor global useBuilt-in 4 ringtones that can be switched back and forth to choose fromRingtone volume can be adjusted freely via APP.Press and hold the override button for 5 seconds to restore the bell to its factory setting.Tap the override button, the bell is in the pending matching state.Blue light blinking: waiting for matchingBlue light is always on: power on, pairing completedSupports up to 7 smart visual door clocksAvailable in black or white www.ukgsmart.com