The ULTRALOQ U-Bolt Pro WiFi Smart Lock with Door Sensor is a square-shaped keyless entry door that offers 8-in-1 security solutions for various locations such as homes, offices, apartments, rentals, Airbnb, hotels, and more. It features a sleek satin black finish with a brushed texture and is made of durable zinc material. This smart lock includes advanced features like 360° fingerprint ID, built-in WiFi, and a door sensor for added security. With Bluetooth connectivity and voice control capabilities, the ULTRALOQ U-Bolt Pro is a top choice for commercial and residential properties.