One Card, Multiple Locks: Easily program one key to as many locks as you need, and freely reset, add, or remove key cards. The lock uses a 13.56MHz M1 card, which is more sensitive than standard 125kHz ID cards. Sensing Thickness: Cards can penetrate thicker wood panels (up to 38mm/1.5 inches), perfect for home cabinets, lockers, drawers, wardrobes, computer desks, storage boxes, secure gyms, swimming pools, libraries, factories, and offices, etc., with a wide range of applications. NFC & RFID Supported: This lock works with RFID keys and supports NFC. For Android, copy your RFID key to your smartphone's wallet via the NFC function. For iOS, add a new transit card to the wallet and then program the transit card into your lock as an NFC access card. Robust Mechanism & DIY Installation: The latch and mortise are made of metal. They are strong enough to lock. Easy to install with screws without drilling. For all non-wood surfaces, it is recommended to use tape instead of screws for installation. Low Battery Alarm & Automatic Unlock: Stays unlocked when the battery is low. Don't worry about being locked out. When the battery is low, a long sound will be heard after unlocking, and it can be used about 15 times. It can be used again after the battery is replaced. Secure your belongings with ease and convenience!