Wireless Doorbell, DENFOON Waterproof Door Chime Kit Operating at over 600 Feet with 1 Plug-In Receiver, 39 Melodies, CD Quality Sound and LED Flash Receiver Power Supply 100-240VAC/50-60Hz Working Current <5mA Chimes 39 Melodies Volume 5 adjustable volume levels(Minimum Silent~Maximum 110db) Wireless Frequency 433Mhz Wireless Code eV1527 Wireless Modulation Mode OOK Wireless Receivng Sensitivity 113dBm Working Temperature -4 °F-140 °F Speaker 40 mm Stereo Speaker Wireless Range 600ft (200M) Transmitter Power Supply 23A 12V Battery (included) Current <5uA Waterproof Level IP67 Light Color Blue Wireless Frequency 433Mhz Working Temperature -4 °F-140 °F Material ‎ABS HIGH PERFORMANCE TRANSMITTER: Ultra-low power consumption; uses a battery that boasts 3 year maximum lifespan; IP67 dustproof and waterproof; working temperature ranges from -4 °F-140 °F; withstands various harsh weather conditions. 600 FT / 200 M WIRELESS RANGE: 1 plug-in receiver included; will not interfere with other equipment in your home or those of your neighbors; ensures that you will never miss any visitors, even if you are several rooms away 39 BEAUTIFUL CHIMES: 40 mm stereo speaker delivers rich and crisp sound; press the button to easily choose from 39 melodies; 5 adjustable volume levels, with a maximum volume of 110 dB; enjoy pleasant melodies whenever someone rings at your door.The silent volume level doesn’t disturb a sleeping baby and the maximum level of 110 dB is hearable by the hearing-impaired or even during a party. What's in the package: 1 × Transmitter (battery included), 1 × Plug-in Receiver 1 × Adhesive 1 × User Manual 1x Gift Box