DIY Cabinet Lock Hole Free ABS Electronic Sensor RFID Invisible Cabinet Lock for Cupboards Closets Item Type: RFID Electronic Cabinet Lock Material: ABS Battery: 1.5V AAA Alkaline Battery x 4 ( Shipped Without Battery ) Static Current: <20uA Operating Current: <180mA Card Standard: M1, NFC User Card Capacity: 18 Operating Temperature: -10℃-60℃ Operating Humidity: 10%RH-90%RH How e: 1. Reset To Factory Default: Press the button for about 2 seconds, and the buzzer will sound one time. At this time, all cards are cleared and reset to factory default. 2. Double Mode: Press the button for about 2 seconds, and the buzzer will sound one time. Then keep button pressed for another 3 secunds for double mode with sound "Di Di” indication. At this time, all cards are cleared. You must to set cards again and unlock with two user cards. 3. Manager Card: 1) The first manager card can be set directly in default state. 2) Add other manager cards: Read manager card 3 times, then read cards to add for manager card. 3) The maximum quantity of manager cards is 5. (Include the first manager card) 4) The manager cards is used to add, delete, configure and unlock. 4. Add User Card: 1) Read manager card one time, then read cards to add for user card. 2) The maximum quantity of user cards is 13. 5. Add User Card: Read manager card 5 times and wait for 5s, then sound "Di Di Di Di Di", and all user cards be deleted. 6. Normal Open When Battery Low Read manager card 9 times, Di” indicate this function is disabled and "Di Di" indicate function is enabled. (Default is enable) 7. Low Battery Indication 1). After the battery is low, the buzzer will sound "Di Di Di Di","Di Di Di Di“ when unlocking. Please replace battery as soon as possible. 2). When Low battery normal open function is enabled, the door lock will not lock after unlocking with low battery. You must replace battery e this lock again.