This door knob offers three unlocking methods: fingerprint recognition, App control, and emergency keys. It features a 508 DPI fingerprint sensor with 160 x 160 pixels, ensuring over 99% recognition in 0.2 seconds. Designed for easy installation, it fits standard US doors with adjustable latch options. The price drops from $35.99 to $29.99. Shipping is free.

This deal is valid only for Prime members.