The OT 300B Smart Door Lock is the perfect security solution for your home. It offers a variety of access methods, including electronic control, biometric, passcode, RF tag, and mechanical key. It also features a semi-conductor sensor on the handle for faster verification of biometric, capacitive touch buttons with auto glow backlight on touch, and it can store up to 100 fingerprints, 100 passwords, and 100 RF tags. Additionally, it includes an emergency power feature, USB C type, and dimensions of 370mm* 70mm* 28mm.