Keypad Smart Lock Installation Guide UK¶

Complete guide to installing a keypad smart lock on UK doors covering euro cylinder replacement, door preparation, mounting, and programming for uPVC, composite, and timber doors.

Choosing the Right Keypad Smart Lock for UK Doors¶

Keypad smart locks are the most popular smart lock type for UK homes, replacing the existing euro cylinder while keeping original handles and hardware. Popular UK models include Yale Conexis L1 (£180-£250 from B&Q), Ultion Smart (£200-£300 from Amazon UK), Nuki Smart Lock 3.0 Pro (£250-£350 from Screwfix), and Avocet Tredwall (£150-£220). Keypad locks offer 4-12 digit PIN codes, temporary guest codes, and battery backup with weeks of low-battery warning. Most achieve TS 007 3-star cylinder rating for insurance compliance. The installation replaces only the euro cylinder - no drilling or door modification is needed for standard uPVC doors. Compatible with 35/35mm, 35/45mm, and 40/40mm euro cylinder sizes. Verify your existing cylinder dimensions before purchasing.

Step-by-Step Keypad Lock Installation¶

Step 1: Measure your existing euro cylinder - remove the retaining screw on the door edge, slide the cylinder out, and measure internal and external lengths. Step 2: Remove the existing cylinder by unscrewing the retaining screw and sliding it out. Step 3: Insert the new smart lock cylinder ensuring the cam is correctly aligned with the lock mechanism. Step 4: Secure the cylinder with the retaining screw. Step 5: Fit the external keypad over the cylinder following manufacturer instructions. Step 6: Fit the internal motor unit, routing any cables as required. Step 7: Insert batteries (4x AA for most models) and test lock functions. Step 8: Download the manufacturer app and create an account. Step 9: Pair the lock with the app via Bluetooth or WiFi. Step 10: Create user PIN codes - set a master admin code and individual codes for family members.

Specifications and Comparison¶

Keypad Lock Feature	Specification	UK Consideration
Keypad Type	Illuminated tactile buttons	Essential for UK winter darkness
Cylinder Rating	TS 007 3-star	Required for insurance compliance
Battery Life	6-12 months (4x AA)	Use Duracell/Energizer alkaline
Weather Resistance	IP44 minimum	UK rain and condensation protection
User Codes	20-50 user codes	Sufficient for family plus guests

FAQ¶

Can I install a keypad smart lock on any UK door?: Keypad smart locks are designed for euro-profile cylinders used in uPVC, composite, and timber doors. Verify your cylinder size before purchasing.
Will a smart lock invalidate my home insurance?: Not if the lock meets TS 007 3-star or Sold Secure Gold standard. Inform your insurer of the change to ensure your policy remains valid.
What happens if the keypad battery dies?: The lock provides low-battery warnings weeks in advance. If the battery fully dies, use the physical key override or emergency 9V battery terminal on the exterior. For more information see our Biometric Smart Lock Guide UK.

Last updated: 2026-05-31.

External Resources¶

For further information consult authority guidelines at the British Standards Institution (BSI).