Wireless Doorbell Waterproof Door Bell Chime Kit Ring Doorbell Chime Alarm Operating Over 1000 feet Range 58 Chime 5 Levels Volume LED Flash for Home Office Classroom Black

The doorbell alarm is fit for home, apartment, classroom, office, villas and more. You can use our doorbells to train dogs, using it to quiet down classrooms, when you ring the bell, the students will know it's time to move on to the next group, the kids are loving it also. And it can be a paging device for the elderly, can signal for care when they need it most. Specifications Wireless Range: 1000ft maximum in the open air Internal Sounds: 58 Chimes Volume: 5 level adjustable levels (0db to 110db) Receiver Power: AC 85V ~ 265V 50Hz / 60Hz Transmitter Power: 2 12V batteries required. (included) Package Content: 2 x transmitter 3 x receiver 1 x screws 2 x double-sided adhesive tape 2 12V batteries 1 x User Manual