Usage Tips:  Description: Color: Gray Voltage: 6V Unlock Way: Bluetooth Tuya Or IC Card Power Supply: 4*AA batteries (not included) Unlock Mode: 13.56MHz IC Card & Tuya APP (Bluetooth) Specifications: No drilling design: fashionable and beautiful, not damaging your door, keeping it exquisite Quick response: 0.5 second response to unlock, greatly saving door opening time Lighter weight: Lightweight design, bid farewell to heavy door locks, and easily push to enter the interior Intelligent app control: mobile app unlocking, app management, real-time viewing of unlocking records Safety guarantee: Made of precision steel locking tongue and thickened material, ensuring you can use it with peace of mind       Package Included: 1 * Main lock   1 * Lock catch   1 * Accessories package   2 * Card Notes: 1. this lock is bluetooth lock, if you need WiFi control, please choose the kit which have gateway! 2. This lock only be used for wooden door, it can't be used for metal door ! 3, Tuya APP only can used for unlock the door, can't be used for lock the door. The lock will automatic to lock when you closed the door