1 Check Dimensions. If door dimensions do not match, go to for drilling instructions. 2C," (60 mm) OR 2Cv" (70 mm) 2Z," (53 mm) Hole 2 Install strike onto door jamb. Actual Size (2) Alarm Interior Exterior Keypad. 5 Install 9V battery into Keypad Exterior. 6 Install AAA batteries into Alarm Interior. 7 Install Keypad Exterior. Bar should slide smoothly through hole in ...