Enhance your home security with the Aqara Door and Window Sensor. Compatible with Apple HomeKit, Alexa, Google Home and more. Receive real-time alerts and automate your smart home effortlessly. Key features Real-Time Security Alerts Receive instant notifications on your smartphone whenever a door or window is opened or closed. Stay informed about your home's entry points in real-time, whether you're at home or away. Note: Not compatible with hubs from other brands. Easy Installation and Setup No complex wiring required. The Aqara Door and Window Sensor features a compact design with adhesive backing for quick mounting on various surfaces. Specifications COLOR: White ITEM NET WEIGHT: 0.034 Pounds /15.5g WIRELESS PROTOCOLS: Zigbee | HUB REQUIRED? COMPATIBLE PLATFORMS: Aqara | Apple Home | Alexa | IFTTT USAGE: Indoor Use OPERATING HUMIDITY: 0 - 95%RH, non-condensing OPERATING TEMPERATURE: -10℃~+45℃ (14℉~113℉) BATTERIES: Lithium Metal (CR1632, Included) PRODUCT DIMENSIONS: 1.61*0.87*0.43 inch (41 × 22 × 11 mm) & 0.79*0.39*0.39 inch(20 × 9.91 × 9.91 mm) INCLUDED COMPONENTS: Sensor Unit x 1, Magnet x 1, Sticker x 2, Quick Start Guide x 1