About the Ubiquiti USL-ENTRY Door/Window Sensor Discreet protection for doors and windows With the Ubiquiti USL-ENTRY, you can enhance the security of your home or business in a simple and effective way. This sensor is designed to detect the opening of doors and windows, helping you maintain complete control over access. Reliable and immediate detection Equipped with a built-in Reed switch, it instantly identifies any opening. As soon as movement is detected, you can receive alerts via the UniFi Protect platform, ensuring a quick response to any situation. Impressive range with SuperLink Thanks to proprietary SuperLink connectivity, it offers a maximum range of up to 2 km (in ideal conditions). It operates on frequencies 865.1–869.5 MHz (EU) and 915.6–927.6 MHz (USA), with a maximum transmission power of 14 dBm, ensuring stable and efficient communication. Long-lasting battery life Powered by a 3V lithium CR123A battery, it provides a battery life of up to 6 years, with a maximum consumption of only 27.7 mW. This means less maintenance and greater peace of mind for you. Robust and secure construction Made from durable polycarbonate, it includes a factory reset button, a function button, and a tamper switch. It also features status and signal LEDs for easy operation verification. Full integration with UniFi Protect Compatible with the UniFi Protect web application and the UniFi Protect mobile app for iOS™ and Android™, it allows you to monitor everything in a centralized and intuitive manner.