Enhance your home security from wherever you are with eufy 5-in-1 Smart Lock C210. No separate bridge required, this smart lock is Wi-Fi enabled and compatible with eufy Security App for remote control anytime, anywhere. Receive notifications, set and disable time-based passcodes, and view door activity history for added peace of mind. In The Smart Lock C210 offers 5 unlocking methods: hands-free via the eufy App, voice control with Alexa or Google Voice Assistant, a smudge-free touchscreen keypad, Apple Watch, or the included physical keys. Its sleek design suits all door styles and features an automatic lock to prevent unauthorized access. Withstanding outdoor temperatures of -22 Deg F to 158 Deg F, it offers around 4 months of battery life and can be instantly unlocked with a portable charger if power runs out. Tested by BHMA, the Smart Lock C210 can be expected to lock and unlock up to 10 times a day for over 30 years. Faceplate: 0.98 In. W. x 2.2 In. H. x 0.13 In. D. 1.05 In. projection. 1-3/8 In. to 2 In. required door thickness. 1.1 In. W. x 2.73 In. H. strike plate. SC1 keyway, ASNI Grade 3. Requires (4)AA batteries, included.