Fits Your Existing Lock - Locked Doors Keep Insurers Happy

Nothing Drilled • 30-day returns • Free UK delivery over £85 • 1-Year warranty

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Works with Matter
Locksure Key Turn Starter Pack: two key turn door lock monitors and the Locksure display hub
Locksure Original Key Turn monitor installed on a compatible euro-cylinder lock, showing how to check lock status while keeping the existing lock.
Diagram of two key-turn sensors installed on opposite sides of one euro-cylinder door.
Locksure display hub and app showing the connection used to check door lock status.
Locksure sensor LED indications: cyan flash for a lock action and amber flash for an unlock action.
Compatibility checks for a key-turn euro-cylinder lock, including a flat lock plate, clearance and a protruding cylinder.
Locksure Original Key Turn kit contents: 2 key-turn sensors and one Locksure Display Hub, batteries and mounting adhesive.
Locksure Key Turn Monitor Options

Key Turn Starter Pack

  • Won't lock you out
  • No motor to jam
  • No drilling
  • Keep your key
  • Hub included

Original Display Hub system

Keep your keys. Add peace of mind.

Two Key Turn monitors, a Display Hub and Locksure app access for one keyed-both-sides door.

£99.99

Multi-door offer: Additional Monitor Packs are 10% off at the basket when added with this starter pack.

Uses the original Locksure Display Hub system, not Matter. Check physical fit before ordering.

What is included? Help with fit

01 / What it does

Keep your keys. Add peace of mind.

Both sides of one door

Inside and outside monitors are included.

A display at home

Check reported status on the included Display Hub.

You stay in control

Keep locking and unlocking manually with your keys.

02 / In the box

Know what you are getting.

  • Inside and outside Key Turn monitors
  • Display Hub
  • USB cable and mounting brackets
  • Mobile app access
Monitor only, not a smart lock.
Locksure cannot unlock your door remotely — making it more secure than smart locks.
Why two monitors?
Key turn locks rotate from both inside and outside. Two monitors ensure accurate detection no matter which side locks or unlocks the door.

Technical Specifications

  • ✓
    Designed for Euro cylinder key turn locks
  • ✓
    Two monitors included — one for each side of the door
  • ✓
    Display Hub shows status of up to 4 doors + connects to Mobile App
  • ✓
    Visual LED alerts to indicate lock/unlock actions
  • ✓
    Bluetooth Low Energy Radio
  • ✓
    A replaceable CR2032 coin cell, typically 18 months depending on use

Customer Reviews

“I rent a flat and can’t change the lock, so this was the perfect solution. It sits neatly over the existing key turn and connects easily to the hub. I love that I can see if the door is locked from anywhere using the app.”

— Qez, Amazon Review

“Very easy to set up and install too. Super simple in fact. Well packaged and everything is clearly labelled. Works well. The company seems to offer good after sales support too. Would recommend.”

— mummyof2, Amazon Review

“I got this as I wanted confidence that my parents were locking the door each night. They were really happy with this and gave both them and me confidence that the house was secure.”

— our thoughts, Amazon Review

Reviews

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Need help choosing?

Start with the fitting diagrams, then use the Ask Locksure form if you need advice.

Locksure is a trading name of Lockstate Limited, registered in England and Wales, company number 13478822. Registered office: 6 Aston Croft, Biggleswade, SG18 8GR, United Kingdom.