Heath Zenith Wireless Plug-In Door Chime and Chime Extender

The SL-6157 features easy chime extension when an existing chime sounds. Simply place the transmitter on the existing chime and when the chime sounds, the transmitter will send the signal and activate the plug-in receiver. The transmitter and receiver provide up to 100 ft of additional transmission range. The SL-6157 transmitter battery is included. The plug-in unit has an 8-note Westminster melody or a 2-note melody and features adjustable volume control.