1、There are two ways to unlock: Bluetooth APP, IC card. Open lock record can be queried. So you don't have to worry about the safety of your property. 2、Intelligent induction lock: No opening hole/ internal installation / using card. So you don't need a key to unlock. 3、Invisible dark lock: lock body is not exposed. This way does not affect the aesthetic appearance. There will be no damage to your cupboards and drawers. 4、4pcs AAA batteries for power supply(not included) and use time is up to one year. So it has long life service. 5、Support emergency external power supply in the case of battery power failure. You can unlock with emergency external power. 6、Support low‑voltage alarm. When the voltage is below a certain value, the lock body will automatically start low‑voltage alarm to remind the user to replace the battery in time. 7、Support long‑range sensing. It adapts to 99% door, drawer, mechanical automatic rebound and the sensing distance is approx. 40‑60mm/1.6‑2.4in. 8、Temporary/permanent/single/loop unlock code can be sent remotely without worrying about opening the door even when you are away. Item Type: Cabinet Lock Material: Metal and ABS plastics Unlocked Mode : Bluetooth APP/ IC Card Power Supply: 4 x AAA Bateries (NOT Included) Support Card Type: M1 card IC Card Capacity: Support 200 pcs Operating Current: <180mA 1 x Lock Body 1 x Lock Catch 1 x Installation Accessories Package 1 x Screw Pack 1 x IC Card 1 x Sensing Area Indicator Patch 1 x Opening Diagram 1 x Instruction Manual