NFC Sensor Remote Control Electronic Hidden Lock, Smart Invisible Door Lock, Secret Room Door Lock, Indoor Concealed Card Swipe Lock for Home Use

Description

Extracted Text & English Translation

Q: What to do when power runs out? A: The lock will sound a low-battery alert. When power drops to the minimum level, the door will unlock automatically to prevent being locked shut.

Q: Can I lock the door after power failure? A: Locking is disabled for safety reasons. The latch bolt will retract and stay unlocked when power is lost. The door remains open and manual locking is not available.

Q: How to select a compatible handle? A: Choose a handle with an M8 connecting rod, which fits the hole position of our door lock.

Q: Is it compatible with aluminum frame doors? A: Except the fingerprint version, card & APP versions cannot be used. Aluminum material interferes with NFC sensing and leads to failure to unlock.

Q: Why does the sensor sometimes fail to open the door? A: The sensing zone is located at the battery compartment. Cards will not be detected at other positions, resulting in failed unlocking.

Q: What edge thickness for lock cutout will cause sensing failure? A: The single-side thickness cannot exceed 25mm; otherwise, the sensing function will fail.

Q: Can the lock be set to require card swiping before locking? A: Yes. The lock supports 3 working modes. The factory default setting requires card swiping to lock the door.