The Yandex YNDX-00522 is a smart motion and light sensor designed by Aqara to help you automate your home environment. Using the Zigbee 3.0 protocol on a frequency range of 2400-2483.5 MHz, it integrates into the Yandex Smart Home ecosystem, though you will need a compatible Zigbee hub to get it running. This compact white device uses an infrared PIR sensor to detect movement within a 170° viewing angle and up to a distance of 7 meters. Weighing only 18 g and measuring 72 x 30 x 30 mm, it can be easily placed on a wall using the included adhesive and rotating bracket, allowing you to angle the sensor exactly where you need it. It operates reliably in temperatures ranging from -10°C to +45°C, making it suitable for various rooms in your house. Powered by a single CR2450 battery with a nominal voltage of 3 V, the sensor is designed for long-term use with a battery life that can reach up to 2 years. This makes it a convenient choice for those who want to trigger lights or security alerts without worrying about frequent maintenance.