CONVENIENT BATTERY-POWERED RECEIVER: This battery-operated doorbell is powered by 3 AAA batteries (included) so no electric outlet needs to be occupied; simply screw the mounting bracket onto the wall and then hook the receiver on 300 M/1000 FT ULTRA LONG WIRELESS RANGE: Will not interfere with other equipment in your home or those of your neighbors; ensures you will never miss a visitor, even if you are a few rooms away or on another floor 55 CHIMES TO CHOOSE FROM: 29 mm stereo speaker delivers rich and crisp sound; 5 adjustable volume levels with a maximum setting of 120 dB; press Next or Previous button to easily choose from 55 melodies HIGH PERFORMANCE TRANSMITTER: Ultra-low power consumption; uses 12V 23A battery that boasts 3-year maximum lifespan; IP55 dustproof and waterproof ratin.
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