About AVANTEK Mini Wireless Doorbell CB-21
|1 Receiver + 2 Push Buttons
|AC plug-in + CR2032 battery
|0–115 dB, 5 volume levels
The AVANTEK CB-21 delivers ultra-long 1000ft wireless range and CD quality sound with 52 melody options. Its IP55 waterproof design withstands harsh weather and ensures you never miss a visitor. With easy plug-and-play setup, customizable tones for each of the 2 included transmitters, and a 115dB max volume, this doorbell offers high-performance features and convenience for enhancing your entryway alert system.