Safety Technology International, Inc. STI-3300 Wireless Doorbell Extender with Receiver Connects to Existing Hardwired Doorbell, Part of Musical Wireless Chime Series
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<b>[Product Information]</b><br>
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<li>Wires onto existing doorbell chime box inside the building or home</li>
<li>Extends the range of which you can hear existing doorbell unit for example to a garage or basement.</li>
<li>Up to 500' from the chime to receiver</li>
<li>Receiver has low and high volume adjustment</li>
<li>UL & CUL Listed, FCC & IC Compliant. Limited one year warranty.</li>
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