KT-CY51 Realtek Bluetooth Smart Euro Cylinder Lock with Private BLE Protocol for Customer Cloud Integration

Keyless Euro Profile Smart Cylinder with Realtek Bluetooth, Fingerprint, Password and Emergency Key

KT-CY51 is an adjustable Euro-profile smart cylinder built with a Realtek Bluetooth module and available with a private BLE protocol. It can connect directly to a customer-owned app, Bluetooth gateway and private cloud without a mandatory Tuya or TTLock cloud layer. The indoor retrofit cylinder supports fingerprint, Bluetooth, passcode, mechanical key and remote authorization.

* Product Description:

Give your access-control solution a cylinder that can fit your own software architecture. KT-CY51 is an indoor adjustable Euro-profile smart cylinder for B2B integration, property access and retrofit projects.

PRIVATE BLE AND CUSTOMER CLOUD INTEGRATION

Built with a Realtek Bluetooth module, KT-CY51 can be supplied with a private BLE protocol for direct connection to a customer-owned mobile app, Bluetooth gateway and private cloud. The architecture does not require a mandatory Tuya or TTLock cloud layer, helping integrators keep the application, gateway and data flow under their own system design.

MULTIPLE ACCESS METHODS

Users can unlock by fingerprint, Bluetooth app, passcode or mechanical key. Remote authorization can be issued for visitors, and the lock supports temporary or long-term offline passcodes. Online remote control and event synchronization depend on the customer's gateway and cloud implementation.

RETROFIT-FRIENDLY EURO CYLINDER

The adjustable cylinder section is approximately 68–100 mm, supporting a range of compatible Euro-profile doors. The product is designed for retrofit installation without drilling. Measure the existing cylinder and confirm the door and lock-case compatibility before ordering.

DAY-TO-DAY MANAGEMENT

The app supports access records, battery status, user management and access sharing. Capacity is up to 60 fingerprints and 20 passcodes. A rechargeable battery provides up to approximately 180 days of standby under typical use conditions.

BACKUP OPTIONS

A Type-C port supports emergency external power when the battery is depleted, and two mechanical keys provide physical backup access.

Designed for access-control integrators, smart-building platforms, proptech companies, security distributors and OEM/ODM projects. Contact KOTONLINK to discuss protocol documentation, gateway compatibility, custom app integration, samples and wholesale cooperation.

Indoor use only. The product is not waterproof. Specifications are factory reference values and may vary by batch.