Lenovo U2 Ultra smart rim lock for Dubai swing doors that cannot take a mortise lock: palm vein, 3D face, video calling and a solar-topped battery.
The Lenovo U2 Ultra is a smart rim lock for Dubai swing doors that cannot take a mortise smart lock, and the one to pick when you still want palm vein, 3D face and video calling. It suits timber and metal swing doors, not glass or sliding doors. A rim lock mounts on the inside face of the door instead of inside its edge. The lock case sits indoors, a keeper is screwed to the frame, and a hole through the door links the two halves. The outside panel carries two cameras, a keypad, a fingerprint reader and a card reader alongside the palm vein and face readers. A visitor can start a video call to your phone, and you can open the door from the Tuya app. Power comes from a 5,000mAh rechargeable battery, helped by a solar panel set into the outside panel. The spec sheet says the panel needs more than 5,000 lux to charge, which means daylight rather than corridor lights. On a garden door or a covered gate it earns its place. In an enclosed tower corridor, expect to charge the battery yourself. The rated range is -25 to 70 C with IP54 dust and splash protection, so a door that catches some sun is fine. The limits are real. The spec sheet gives no door thickness range for this model, so we measure your door before anything is ordered. No UAE shop stocks it, so it is sourced to order. A fire-rated apartment entrance door should not be drilled without building approval.
Palm vein, 3D face, fingerprint, code and card on one rim lock
Two door cameras for video calls to your phoneSolar panel tops up a 5,000mAh battery in daylightFits swing doors that cannot take a mortise lock bodyModel U2 Ultra
| Lock type | Rim lock, surface mounted on a swing door |
| Unlock methods | Palm vein, 3D face, fingerprint, PIN code, card, app |
| User capacity | 100 palms, 100 faces, 100 fingerprints, 100 cards, 50 PIN codes (1 admin, 49 users) |
| Cameras | Dual cameras with remote video intercom |
| Power | 5,000mAh rechargeable battery with replaceable solar panel (charges above 5,000 lux) |
| App and voice | Tuya / Smart Life over Wi-Fi; Siri, Google Assistant and Alexa unlock |
| Operating temperature | -25 to 70 C |
| Weather rating | IP54 |
| Size and finish | Front 216 x 75 x 32.4mm, rear 210 x 72 x 51mm, phantom black tempered glass |
Most Dubai villa and apartment main doors take a European mortise lock, so a rim lock usually earns its place on the other doors: a villa side or kitchen door, a covered gate into the garden, a store room, a metal service door, or an older door with no room for a mortise pocket. In a rented home, any lock change needs the landlord's approval, and a rim lock leaves screw holes in the door face. Tower entrance doors are usually fire rated, and building management decides what can be fixed to them, so ask before ordering. Holiday home owners can send temporary codes instead of handing over keys. A DEWA power cut does not stop the lock, since it runs on its own battery, though app control drops until the router is back. Dust settles on the solar panel quickly in sandy months, so a regular wipe keeps it charging.
Lenovo in the UAE. Lenovo-branded smart locks and cameras are made by Yunka Intelligent (Shenzhen) under licence as part of Lenovo's smart-device ecosystem, rather than by Lenovo's computer business. Most of the locks run on the Tuya / Smart Life app, while the cameras use the cam720 app. UAE availability is patchy: a few models are stocked by specialist smart-lock retailers and many are sourced to order, so we confirm the exact model, lock body and lead time before quoting.
