YEEUU S170 Smart Knob with Fingerprint, NFC, Access Code, App/Bluetooth Enabled. Cylinder Inside.

High-Level Waterproof&Hidden Keyhole The high waterproof enhances S170's durability and reliability, ensuring it remains functional even in adverse weather conditions. The hidden keyhole increases the overall security of the premises. Multiple Passcode Modes Temporary Code-Setting start and end time. Recurring Code-Taking effect periodically. Dynamic Code-Changing every 5 minutes. Off-line Code-Manage without relying on the network. Long Life with Small Batteries Powered by 3*AAA (LR03)batteries. High-energy batteries with lower energy consumption can guarantee routine work for 18 months. Backplate Optional YEEUU smart lock offers more possibilities for installation forms.