BITIWEND Wireless Doorbell Kit,Operating at 1000 Feet with 52 Chimes,4 Level Volume, 3 Receivers & 2 Weatherproof Push Buttons with Sound and LED Flash,Low Power Consumption

Bitiwend wireless doorbells are expandable and add more receivers and transmitters including accessories like door and motion sensor.
One doorbell receiver can work with 20 transmitters at most and each transmitter can be set to different or same chime/music.

Specifications:
Maximum 1000ft /300m operating range in open area
Transmitter battery: A23 12V Alkaline Battery
Transmitter power consumption:

• Energizer A23 Battery, 12V (Pack of 4)
• Heavy-Duty Exterior Mounting Tape, Holds 5 lb., 1"x60"
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