• Works on all transformer voltages 8 24 volts
• Different sounds for front and back doors
• Use with existing doorbell
• Attractive, compact design leaves other outlet receptacle available
• 2 1/2" speaker provides excellent sound
• Select from 6 sound options
• Operating range: up to 150 ft
• 32 selectable codes block interference from outside signals
• Only works with RC3733D
• Two year warranty
• This will not work with model RC3030 or RC3733 only with works with the "D" version.
• Add on door bell receiver Model RC3733D listed below

Our Extend A Bell expands an existing wired doorbell to be heard in any part of the home. The transmitter connects onto the low voltage screws in the existing doorbell. Plug the doorbell receiver into any 110V electrical outlet. Hear the doorbell in all parts of the home basement, second floor, or the attic.