Product Name: Lockin S50M Pro Smart Lock

Unlocking Methods:
-Finger Vein Recognition
-Mobile Bluetooth
-Password
-Temporary Password (One-time / Periodic)
-NFC
-HomeKit Unlock
-Dual Verification
-Emergency Key

Main Material: Aluminum Alloy
Screen: 4-inch IPS HD Screen, 800 * 480
Lock Cylinder: C-level

Password Length:
6-10 digits, supports up to 20 digits for fake passwords

Power Supply:
8 AA Batteries for door lock functions (open/close, etc.)
7.4V 5000mAh Lithium Battery for camera and other functions

Standby Time:
AA Batteries: 12 months (assuming 10 open/close cycles per day)
Lithium Battery: 3-4 months

Operating Temperature: -10°C ~ 55°C

Password Capacity:
Regular Passwords: 50 sets
One-time Passwords: 8 sets
Periodic Passwords: 16 sets
Finger Vein Capacity: 50 sets
NFC Capacity: 25 sets (NFC cards must be purchased separately)