Safety Technology International, Inc. STI-3300 Wireless Doorbell Extender with Receiver Connects to Existing Hardwired Doorbell, Part of Musical Wireless Chime Series

  • Wires onto existing doorbell chime box inside the building or home
  • Extends the range of which you can hear existing doorbell unit for example to a garage or basement.
  • Up to 500' from the chime to receiver
  • Receiver has low and high volume adjustment