-RUG-2002 11106 FROM TO 166614162461020 Features of WC133 Wireless Chime Receiver “see NO installation Up to 150 feet working range. 4 delectable house code. Built-in three tunes. Chime INSTALLATION Insert the three batteries into the battery compartment according to the correct polarity (+ & -) marked Model WC133 requires 3 pieces of “AA batteries (Alkaline batteries are recommenced). Press the button of the transmitter to make the chime sound.