Remove the adhesive mounting plate by gently lifting the tab on the mounting plate and sliding in the opposite direction. Using the mounting bracket as a template, in each of the keyholes, draw a mark for the mounting plug and screw. Using the 2 screws and mounting plugs included, attach the mounting bracket to the wall. Line up the slot of the bracket and the smoke detector. Push the detector onto the mounting bracket and turn it clockwise to fix in place. Pull forward on the smoke detector to make sure it is securely attached to the mounting bracket.