Feature: 1.Two Unlock Mode: Single-key Mode, Dual-key Mode. 2.Can be used with 4 x AAA 1.5V alkaline batteries or a USB power adapter. The batteries can last 8 months under normal use. 3.The sound alarm will alert when the voltage is low. When the batteries become too weak to operate, the door will open automatically.4.Installation Template, Double Stick Tape and Manual are provided in the kit. Operation Instructions in Single Unlock Mode 1.Initialization: After installing the battery, hold on the RESET button (passing a small hard object through the hole in the front of the lock cylinder to press the reset button). When you hear a ""Di"" sounds, release the hand. The lock beeps: ""Di, Di, Di, Di, Di" ( short beeps). At this point, the lock is initialized (clear lock record) state, in Single Mode. 2.Set Master Card: After initializing, the first card (RFID Card / Tag) is swiped in the sensing area of the lock body. After a sound (""Di-Di"") is made, the card becomes a Master Card. Master card can be used to unlock the cabinet door, add or delete the card. 3.Set Card: Swipe the management card (After reading successfully, the lock beeps ""Di"", in an unlocked state, new card can be configured), put new card on the sensing area untill you hear a short beep which means the setting is successful. The card can be setted continuously (up to 11 pcs). 4.Operation instructions in Dual Unlock Mode is available in Manual. ONE KEY FOR MULTIPLE LOCKS - This RFID locks are programmable, and you can use one key (RFID card/fob) to unlock several cabinet locks as you . The only thing you need to do: the key into the locks and test it installation. SUITABLE FOR WOODEN CABINETS - RFID cards can penetrate through thicker wood panels (up to 38mm/1.5 inch) and the key-fobs are basically items with slightlyless power, for making duplicate keys. Fits doors up to 0 -1.2 inch thick, Perfect of cabinets, lockers, cupboards, carts, data racks, boxes, . SIZE & STURDY MECHANISM - Latch and mortise are made by metal, they are sturdy enough for the cabinets. Unlock the cabinet door without touching. RFID card / tags are portable and easy to . Provides good safety protection of your personal items. children's safety , avoid your kids free to open the drawers or cabinet doors. LOW POWER ALARM & AUTO-UNLOCK - the lock has been setup and programmed, it will indicate as needed low-battery status with a long beep after being opened.After the long beep, the lock can be used approximately 15 . When the batteries become too weak to operate, the door will open automatically, at which point the batteries must be replaced the lock can be used again. DIY KIT - Installation Template, Double Stick Tape and Manual are provided in the kit. This lock can be used with a USB power adapter instead of alkaline batteries. Colour: Black Material: ABS + metal Package Contents: 1 * Cabinet Lock 1 * Screw bag 1 * Lock Bolt 2 * IC Card 2 * Keytag Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.