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Heath/Zenith SL-7366-02 Wireless Plug-in Door Chime Kit$29.99
He SL-7366-02 plug-in chime kit has a 100 feet transmission range between the chime receiver and the push button. Choose the chime melody you want either an 8-note Westminster melody or a 2-note melody. With no assembly required and no wires this is the simplest door chime to install.