Wireless Doorbell, Self-Powered Doorbell, No Battery Required, Wireless Door Chime, Waterproof Push Button with 150m Range, 38 Chimes, 4 Volume Levels and LED - White-LIAIKI

【Latest RF Push Technology & Battery-Free】 This wireless doorbell is self-powered, requiring no cables or batteries, protecting the environment and saving you money. When the transmitter is pressed, it generates its own electrical current and sends a stable signal to the receiver. No more worrying about damaging the wall or the doorbell when changing batteries!

【38 Ringtones & 4 Volume Levels】 Our wireless stereo doorbell speaker delivers rich, clear sound. It offers a wide range of 38 ringtones and 4 volume levels (including mute) to suit your personal preferences. Press and hold the volume button to return to the first ringtone (Dingdong).

With its memory function, the wireless doorbell remembers your last settings after a power outage. 【No Crosstalk or False Alarms】This small wireless doorbell has strong penetration and anti-interference capabilities. The range is up to 152m (500ft) in open areas and up to 305m (1000ft) in open spaces. It won't affect other devices in your home or your neighbors' homes, ensuring you never miss a visitor, even if you're a few rooms away or on another floor. 【Easy Installation】Simply connect the mini receiver to an outlet and mount the transmitter to a wall. Our doorbells can be used in homes, apartments, schools, country houses, offices, and more. This battery-free wireless doorbell also makes a lovely Christmas, birthday, or anniversary gift for any homeowner or business. Transmission Power: Self-powered Doorbell Receiver Power Supply: AC 110-240V, 50/60Hz Receiver Power Consumption: 0.25W Ringtones: 38 melodies Volume Levels: 4 levels Transmission Range: Up to 152m (in open area) Operating Frequency: 433MHz Operating Temperature: -4°C to 140°C