Honeywell Home 9 Series Wireless Doorbell and Button RDWL917AX2000/E

This portable wireless doorbell has a high-quality sound that comes with 8 tunes and has a range of 450 ft (137m) and a sound level of 90 dB. It has a downloadable MP3 with unlimited downloadable tunes. It has illuminated Halo and LED strobe alerts, including 7 Custom LED halo alert colors and assignable halo and strobe alerts per push button and accessories. You can conenct up to 6 transmitters simultaneously, such as push buttons and awareness devices (door contacts, motion sensors).