Wireless Doorbell Kit Waterproof Doorbell with Chime operating at over 850 Ft with 58 Door Bell Chime 5 Volume Adjustable Levels and LED Flash for Home or Classroom 1 Push Button 2 Receivers?

1.58 melodies with classic tunes for choose can meet your different festival atmosphere. 2.5 level volume with Silent Mode suit for different daily need. Widely use: 1. Can use as a normal doorbell chime for our home. 2. Reminder(music alarm) for section in Classroom. 3. Emergency caller for anyone in need CHWARES DIRECT We are aim to provide smart and convenient products to make our life simple and happy without too much work. CHWARES Wireless Doorbell kits Which is a one of those products. Simple to install and convenient by using it. Perfect for home as a normal doorbell Chime or use in classroom as a music alarm for break or activities reminder. Different tune can be set up in different floor and place to easy figure out where the guest is and meet different hobbies. Simple and convenient for senior and pregnant women to use as a emergency alarm . Specification 1.Receiver Operating Voltage: AC110V 2.Battery in transmitter: 12V 23A alkaline battery 3.Power consumption of transmitter <10mW 4.Wireless Range: 850 ft maximum (Open Space) 5.Working Temperature:-22? - 158? 6.Internal Sounds: 58 Chimes 7.Volume range: 5 adjustable levels (25db to 85db) & silent mode (0db) 8.Working frequency: 433.92MHZ ± 0.5MHZ Package Includes 1 x Push Button (Transmitter) 2 x Plugin Chime (Receiver) 2x Screws 1 x Double-Sided Adhesive Tape 1 x 12V 23A battery for Transmitter 1 x Screwdriver 1 x User Manual Warm Tips? Metal will interfere with the signal and shorten the transmission range. Please place the transmitter in areas away from metals.