How to Install Keyless Entry Door Lock | Step-By-Step Fit Guide

The good news is that nearly every keyless lock on the market fits standard US pre-drilled doors—if you check the four numbers first. This guide walks the exact order that major manufacturers use, so you avoid the motor-strain and misalignment mistakes that send people back to the hardware store.

What You Need Before Starting

A keyless lock replaces your existing deadbolt and knob. You will need a Phillips screwdriver and four fresh AA batteries. Most kits include the strike plate and mounting screws. No chisel or drill is required for a standard door.

Confirming Your Door Fits Standard Keyless Locks

Measuring before you buy saves the biggest headache. Check these four dimensions against the lock’s spec sheet:

Philips Home’s installation guide confirms that modern keyless locks are designed for these exact ANSI/BHMA standards. A custom or non-standard door may require drilling, but a standard pre-hung door will accept the lock without modification.

Removing Your Old Lock

Start with the interior side. Unscrew the deadbolt plate (counterclockwise), remove the faceplate screws, and pull the old deadbolt assembly out. Do the same for the knob assembly. Slide the latch plate off the edge of the door.

You are now looking at an empty door with three holes: the large cross bore for the deadbolt, the smaller latch hole on the edge, and the knob bore. Clean any paint or debris from these openings so the new parts seat flush.

Installing the Latch and Deadbolt

Insert the new latch into the edge of the door. The beveled side must face the door frame. Secure it with the provided screws, then test that the latch retracts smoothly and springs back.

Fully extend the deadbolt’s plunger using a Phillips screwdriver. Slide the deadbolt unit into the cross bore. The face must be flush with the door edge. If the bolt body feels too short, rotate its face clockwise to lengthen the assembly.

Mounting the Exterior Keypad

Feed the rubber wiring cable—attached to the exterior keypad—through the cross bore from the outside. This cable must route under the latch mechanism, not over it.

On the interior side, attach the mounting plate to the door with the supplied screws. Do not overtighten; a warped plate causes the deadbolt to drag.

Connecting the Interior Unit and Batteries

Plug the exterior cable into the interior unit’s socket. The connector is keyed, so it only fits one way. Keep the thumb-turn vertical as you slide the interior assembly onto the mounting plate. Secure it with two or three screws.

Install four AA batteries with the correct polarity. The keypad will illuminate with a white light when power is applied.

Calibrating the Lock (Handing)

This step is the most commonly skipped and the most critical. Press and hold the reset button for five seconds. The lock calibrates to your door’s orientation—whether it opens inward or outward, left-hinged or right-hinged. Skipping this causes motor strain, misalignment, and a lock that struggles to move the bolt.

Without it, the lock never learns where “locked” and “unlocked” actually are on your specific door.

Testing and Final Adjustments

Test the deadbolt with the door open first. The bolt should extend and retract fully without hesitation. Then test with the door closed. If the bolt catches on the strike plate, loosen the strike plate screws slightly and shift it a millimeter or two. This is the fix for the “gouged jamb” problem.

If your lock supports app pairing—and most Wi-Fi models do—download the manufacturer’s app, scan the QR code on the interior unit, and follow the Bluetooth pairing instructions. The Lockin and Philips apps are both available on the App Store and Google Play.