REMOTE DOOR CHIME Installation 1. Remove the Doer Chime fom the mounting bracket by sliding it upward. 2. Open the hatter door gently at the back of the Uni, Take out the A23 battery and mounting accessories. Insert 3 pieces of AAA she batteries (rot in chided) int the battery compartment fig 1. . Mike sure batteries are in correct polarity as shown on the Valery compartment before replace the cattery dost. Site unit can be fixed by mounting bracket provided.