The Locksure Matter Thumb Turn sensor sits over your existing thumb-turn lock and reports real lock state to your Matter setup, Apple Home, Google Home, Amazon Alexa, SmartThings or Home Assistant. No cylinder swap, no drilling, no extra hub if you already have a smart home hub. Want door open/close on the same Matter tile? Add the optional Locksure Open/Close Magnet accessory at £9.99, mounts to your door frame with adhesive, no setup required.
Matter Thumb Turn Sensor, Technical Specifications
- Fits over the profile of an exposed barrel (must be at least 1mm exposed)
- Single device monitors locking and unlocking from both sides of the door
- Open/Close Magnet sold separately (£9.99) adds door open/close detection to the same Matter device as a second endpoint (Contact Sensor)
- Matter native, pairs with Apple Home, Google Home, Amazon Alexa, SmartThings and Home Assistant
- No extra hub needed if you already have a smart home hub
- Thread mesh, extends through walls via the Thread border router built into your smart home hub
- ~18 months battery life on a CR2032 coin cell at the lowest TX power setting (Thread sleepy end-device, ICD)
- Signed firmware updates over Bluetooth, straight from the app
Pairing & Compatibility
You need one smart home hub, and you may already have one. Any one of these works as the hub on its own. The hub is not included in the kit.
Apple Home: HomePod mini, HomePod (2nd generation), Apple TV 4K (2nd generation, or 3rd generation Wi-Fi + Ethernet).
Google Home: Nest Hub (2nd gen), Nest Hub Max, Nest Wifi Pro, Google TV Streamer (4K), Google Home Speaker.
Amazon Alexa: Echo (4th gen), Echo Show 8 (3rd gen), Echo Show 10 (3rd gen), Echo Show 15 (2nd gen), Echo Show 21, Echo Hub, Echo Studio, Echo Dot Max.
SmartThings: SmartThings Station, Aeotec Smart Home Hub, some Samsung TVs with a SmartThings hub built in.
Home Assistant: Home Assistant Yellow, or any Home Assistant with a Connect ZBT-1 (SkyConnect) or ZBT-2, with Thread enabled.
The technical detail: the sensor needs a Matter controller with a Thread border router. Most of the hubs above do both. Exact model, current software and platform setup matter.
Heads-up on battery reading: the battery percentage is estimated from coin cell voltage, which stays almost flat for most of a CR2032’s life, so the gauge reads conservatively at the top end. A brand new cell typically shows 80 to 95% rather than 100%. This does not affect battery life. Watch the trend rather than the exact number, and replace the cell when the reading starts falling steadily. A gauge refinement is planned in a future free OTA.
Customer Reviews
“The visual flash of the LEDs alone when I lock the door really stick in my memory. Locksure has been on my door for over six months now and I want to keep it!”
Jason, Stevenage ★★★★★
“We have a three story house and, just before bed, I get paranoid if I remembered to lock the door. No more with Locksure, I just check the app and have peace of mind.”
Belinda, Slough ★★★★★
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