SAFETYON Keyless Entry System Car Alarms Remote Control Central Kit Door Lock Latch Handle Knob Deadbolt Camper Trailer Fit for door: Thickness 30-50mm£¬right-handed door. Press the number key 8 continually and press the lock button in the meantime until you hear a beep. Input the factory password 1234, then press the lock button. Input the password you want, then press the lock button. Package included: 1 X Handle, 1 X Remote controller, 2 X Keys and Installation Hardware(batteries not included).