Secure your home with the OT 300R Smart Door Lock, a standalone electronic control lock that has a strong mortise of 6068 and is designed to fit door thicknesses of 35-60mm. With a passcode, RF tag, mechanical key, capacitive touch buttons, auto glow backlight on touch, a password capacity of 100 and an RF tag capacity of 100 (Mifare 13.56 mhz), this lock is sure to keep your home safe. It also has emergency power- USB C type and 4 Pcs * AA Battery and is made from zinc alloy, with dimensions of 370mm* 70mm* 28mm.