Infrared Sensor Camera make it also can work well in dark environmen Suitable for Many Doors: push pull, frame, frameless glass door, double glass door, single glass door, sliding door,etc.(with 8-12mm thickness).Also,version suit for framed glass door is also ok for wooden door (30 to 120mm door thickness, drill needed) Digital Touch Keypad Panel with Backlight: makes it convenient to use at night Convenient APP management system, you can manage your smart lock anytime and anywhere Easy to Install and Program: equipped with the necessary accessories and English interface.s: 3D infraed Face,Fingerprint, Password, IC Card,tuya smart APP (bluetooth) 6 unlock ways: 3D infraed Face,Fingerprint, Password, IC Card,tuya smart APP,Remote control(optional) User capacity: 250 in total Face user: 50pcs Fingerprint users: 100pcs Card+code users: 240pcs (The product appearance and printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: Metal Package Contents: 1 set of door locks