Electronic Door Lock Cylinder: Keyless Upgrade Without Replacing the Door
Your existing door lock can become smart in minutes. The SK-S1K electronic door lock cylinder swaps into a standard cylinder position and unlocks four ways: PIN, RFID card, mechanical key and the Tuya App.
Four Ways to Unlock
Type a PIN on the keypad, tap an RFID card, use the emergency mechanical key, or open from your phone through the Tuya App. The built-in cylinder design keeps your existing door handle and strike plate — no rewiring, no new door.
Retrofit-First Design
The SK-S1K fits doors 35-45 mm thick and installs like a standard cylinder, so you keep your existing hardware and still get keyless convenience for tenants, family and staff.
Never Locked Out
An emergency mechanical key is always part of the package, and if the CR123A battery runs low, the Type-C charging port powers the lock up right away. Fingerprint-grade capacity of 100 users covers most households and small teams.
Where the SK-S1K Works Best
- Apartment doors – give tenants codes, not keys.
- Office and meeting rooms – control staff access per schedule.
- Home front doors – keyless entry with key backup.
- Airbnb and short-rental units – change PINs between guests.
Getting Started
As a smart lock OEM/ODM manufacturer, we supply the SK-S1K with custom logo, packaging and color options (silver or black) for distributors and retailers. Contact us for samples, bulk pricing or OEM/ODM customization.