SECRUI Wireless Doorbell, Electric Cordless Door Bells Chime IP55 Waterproof Battery Operated at 1000ft Long Range with 52 Melodies 5 Volume 2 Plug in Receivers Easy Install for Home, Front, Classroom

1. Loud Enough Wireless Battery Doorbells for Anywhere - Adjustable volume and silent mode: 0 to 120 dB, 52 optional MP3 Melodies. You will never miss a visitor even if you are a few rooms away or on another floor. You can also choose the silent mode when you don't want to be disturbed.
2. Long Range Outdoor Wireless Plug in Door bell - Ultra-long wireless 300M long range doorbell, Whether upstairs or basement, ensures you to hear and answer the doorbell in time. Memory function makes the portable wireless doorbell chime remember the last ringtone and volume, no need to reset even if after a power outage.
3. Waterproof Wireless Doorbell Chime - IP55 waterproof rating of the push button ensures the perfect usage in rainy days. Sleek flat panel makes cleaning dust a piece of cake. Doorbell Push button powered by battery that lasts up to 3 years without replacing. Multiple use for home, office, garage, store, office, apartments, villas, garden, hospital, nursery，school the disabled people etc.
4. Cordless doorbell with Colorful LED flash light is easy for people including the hard of hearing impaired to notice.
5. Easy Installation Wireless Cordless Doorbell - Wireless doorbells without any cables. Just plug the doorbell receiver into a socket and fix the transmitter with the accessories provided.