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This is a keyless door knob that opens four ways: a fingerprint reader, a backlit keypad code, app control, and two mechanical backup keys. It is aimed at bedrooms and interior doors rather than front entries, and it installs on standard US doors with a screwdriver and no drilling. The 400mAh rechargeable battery is rated for up to a year of standby, and the knob adds silent mode, passage mode, one-time guest codes and anti-peep entry. Against keypad-only smart knobs it adds biometric entry; against full smart deadbolts it is simpler and lighter-duty, with no deadbolt and no mention of a major smart-home platform.
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This smart door knob unlocks four ways: fingerprint, keypad passcode, app control, or one of two mechanical backup keys. Fingerprint recognition takes 0.2 seconds. The keypad has anti-peep protection and is backlit for use at night.
It has a low-battery alert, silent mode, and passage mode, which keeps the door unlocked. One-time guest passcodes are supported. A 400mAh rechargeable battery charges fully in 4 to 6 hours and gives up to a year of standby power.
It fits standard US doors and installs with a single screwdriver in about 15 minutes, with no drilling required. The latch is adjustable from 2-3/8" (60mm) to 2-3/4" (70mm). It fits doors 1-1/8" to 2-1/8" (30mm to 55mm) thick.
