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..
- Receiver has low and high volume adjustment.
- UL & CUL Listed, FCC & IC Compliant. Limited one year warranty..