Unlock convenience and security with the Tapo Smart Deadbolt DL105. Its advanced fingerprint sensor accurately recognizes fingerprints, and the ultra-long battery life keeps it powered for up to 1 year. Unlock in six different ways: by fingerprint recognition, using custom passcodes on the keypad, via the Tapo App, via close-range Bluetooth, your smart home assistant, or by using the included keys. Manage residents and guests with ease by creating custom permanent, one-time or scheduled passcodes. Pair with your Amazon Alexa, Google Home or Samsung SmartThings for hands-free voice operation and mangement. Security features such as auto-lock, real-time alerts for suspicious activity, and a detailed activity log give you ultimate peace of mind. The exterior assembly measures 5.88 × 2.65 × 3.54 in, while the interior assembly measures 7.83 × 2.91 × 2.02 in. When installed (excluding the lock cylinder), the exterior assembly depth is reduced to 0.91 in, and the interior assembly depth is 1.83 in for a sleek, space-efficient fit. ?Battery lfe is based on TP-ink laboratory tests,assuming 20 unlocks per day, Estimated durations are up to 1 year in W-Fi mode and up to 2 years in Bluetooth mode. Actual battery life may vary due to device settings, router specifications, usage, and environmental factors. *Recognition time and accuracy are based on TP-Link laboratory tests. Actual recognition time and accuracy may vary due to the number of fingerprints registered, usage conditions, and environmental factors.