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How to fit a fingerprint door opener, step by step

Updated: 16 October 2026

You are about to drill an internal timber door, and the first job is to measure it so you can stop if the listing’s hole is not the hole you already have. How to fit a fingerprint door opener, here, means thickness, backset, bore and handing. It is not a ranking, and it is not a drill script for a multipoint uPVC door. Products Compared read the fitting lines on 15 October 2026 and the public UK pages on backset. There was no laboratory fit test. If the lock body is still undecided, start with the [fingerprint door opener buying guide](/hub/electronic-surveillance/fingerprint-door-opener/sub/fingerprint-door-opener-buying-guide). The comparison is the [fingerprint door opener](/hub/electronic-surveillance/fingerprint-door-opener) table.

You are about to drill an internal timber door, and the first job is to measure it so you can stop if the listing’s hole is not the hole you already have.

Our top picks

Yocdunm Yocdunm fingerprint lever

Best overall

Yocdunm Yocdunm fingerprint lever
7.4/10about £31.99
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LXLRHH LXLRHH 5-in-1 lever

Alternative

LXLRHH LXLRHH 5-in-1 lever
5.8/10about £39.99
View offer
TEKXDD TEKXDD Smart Lock-0421

Rank 3

TEKXDD TEKXDD Smart Lock-0421
8.8/10about £39.99
View offer
On this page
  1. 1.Measure thickness, backset, bore and handing before you drill
  2. 2.What these eight listings actually state
  3. 3.Where no drilling meets a 54 mm hole
  4. 4.When you stop and get a professional

Measure thickness, backset, bore and handing before you drill

Open the door and measure the thickness with a ruler through the edge, in millimetres. Then measure from the face of the door edge to the centre of the handle. That distance is the backset. Doorstuff, a UK trade page, says almost all domestic tubular latches are 44 mm or 57 mm backset. Those usual UK pairs are not the 60–70 mm latch line on two levers here. A 54 mm hole through the face is a different preparation. A 35 mm leaf is below LXLRHH’s 40 mm minimum. TEKXDD, Yocdunm and LXLRHH say left or right. The others leave handing unstated, so use the diagram in the box.

What these eight listings actually state

Yocdunm prints 35–50 mm and an adjustable latch of 60–70 mm. TEKXDD prints 35–55 mm and no drilling, with bore and backset unstated. LXLRHH prints 40–55 mm, a 60–70 mm latch and a 54 mm door hole. Both DHEISHA listings print timber of 30–55 mm and no drilling. Swokely prints 35–60 mm and two types of insert lock. AccessShield and Simpled print no millimetre band. AccessShield says the frame should be flush. Simpled claims a retrofit and names no tool. A 60–70 mm latch is not Doorstuff’s 44 mm or 57 mm backset. Measure yours. Which listing to buy, once the numbers match, is on the best fingerprint door opener page.
Yocdunm Yocdunm fingerprint lever

Testsieger

Yocdunm Yocdunm fingerprint lever
7.4/10about £31.99
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Where no drilling meets a 54 mm hole

LXLRHH’s fitting bullet states a 54 mm door hole and says no drilling is required, for most standard UK indoor doors. Those claims cannot both be a promise. If the door only has Yale’s smaller edge hole and a 15 mm spindle hole, a 54 mm face bore is a hole you may still have to cut. The black DHEISHA listing has the same tension: the bullets say no drilling and that it fits most US doors, while one UK review says the mechanism needs a hole of at least about 54 mm. That text is repeated on the silver file. TEKXDD claims no drilling and states no bore, so you cannot check the claim against a number until the template is in your hand. Stop and compare the template. The lever boxes do not include batteries. Fit the cells, and keep the key reachable from outside, before you shut the door.

When you stop and get a professional

Call a professional for a multipoint uPVC or composite gearbox. That door is the fingerprint door opener for a uPVC front door page, and the fit for these levers is no. Call a professional if a euro cylinder would sit proud of the handle. West Yorkshire Police advice is that the cylinder should sit flush. Call a professional for a mains spur: AccessShield includes a power supply, and a spur is not a handle swap. Call a professional if the latch jams with someone inside, or if the leaf is a fire door and a new hole would count as damage. None of these levers is claimed as BS 3621, TS 007 or Sold Secure.

Common questions

What four measurements do you take before you open a drill?
Measure thickness through the door edge, backset from the edge to the centre of the handle, the diameter of any hole already in the face or the edge, and the way the latch bevel faces. Write the numbers down in millimetres. A usual UK tubular backset is 44 mm or 57 mm on Doorstuff’s trade page. Two levers here print a 60–70 mm latch, which is a different pair of figures. Compare them. Do not assume they match.
Is no drilling compatible with a 54 mm hole?
Only if that 54 mm hole is already in the door. LXLRHH states a 54 mm hole and no drilling together. DHEISHA’s bullets say no drilling, and one UK review says at least about 54 mm. A door prepared only for a tubular latch, with a small edge hole and a 15 mm spindle hole, does not already have a 54 mm face bore. Stop and hold the template against the door.
Is a 60–70 mm latch the same as a UK 64 mm or 76 mm tubular latch?
No. Yocdunm and LXLRHH print an adjustable latch of 60–70 mm. Home Secure’s guide pairs a 64 mm case with about 44 mm backset and a 76 mm case with about 57 mm backset. Those are close numbers and they are not the same specification. Measure from your door edge to the handle centre and use the template in the box.
How do you tell left from right when the suppliers disagree?
TEKXDD, Yocdunm and LXLRHH say the lever is left- or right-handed. DHEISHA, Swokely, AccessShield and Simpled do not state handing. UK shops do not all use the same standing position to name the hand. Follow the diagram supplied with the lock you bought. If the bevel faces the wrong way and the listing does not say it reverses, stop rather than forcing it.
When do you stop and call a locksmith instead of carrying on?
Stop for a multipoint uPVC or composite door, a cylinder that would protrude past the handle, a mains spur for the AccessShield supply, a latch jammed with someone inside, or a fire door where a new hole would count as damage. Do not invent a drill sequence for those cases. A timber bedroom door with a matching thickness is the job this page is measuring for.

Related pages

Fingerprint door opener for a bedroom

Fingerprint door openers

Best fingerprint door opener: the listing that fits

Fingerprint door opener buying guide for your door

Can a fingerprint door opener fit a uPVC front door

Sources

Public UK sources from the research digest, last checked on 15 October 2026.

  1. GOV.UK, consumer connectable product security (retrieved 15.10.2026)
  2. SI 2023/1007 Schedule 1 (retrieved 15.10.2026)
  3. ICO, biometric data processed lawfully (retrieved 15.10.2026)
  4. Secured by Design, locks (retrieved 15.10.2026)
  5. West Yorkshire Police euro-cylinder note (retrieved 15.10.2026)
  6. Approved Document Q (retrieved 15.10.2026)
  7. Which?, smart door locks (retrieved 15.10.2026)
  8. Which?, faulty goods (retrieved 15.10.2026)