Reliable Zigbee door and window monitoring for automations, alerts, and everyday peace of mind.
The Third Reality Door & Window Sensor is a practical contact sensor for Home Assistant, SmartThings, Hubitat, Homey, Aeotec, and Echo devices with built-in Zigbee hubs. The setup flow is straightforward, and it fits common smart home use cases like entry alerts, lighting triggers, and routine-based security checks.
Details
Zigbee contact sensing for open/close state monitoring
Works with major Zigbee ecosystems, including Home Assistant
Indoor installation with tape or screw mounting options
Good for entry points, cabinets, gates, and window automations
Third Reality is a smart home and IoT technology company dedicated to creating high-quality, user-focused devices and software that make connected living more intuitive, reliable, and adaptable. Founded in 2017, the company designs a wide range of products—such as motion and environmental sensors, smart plugs, lighting, hubs, and more—that integrate seamlessly with major smart ecosystems and protocols, including Matter, Alexa, Google Assistant, SmartThings, and of course Home Assistant. With an emphasis on innovation and interoperability, Third Reality builds solutions that simplify automation, enhance comfort and efficiency, and give users flexible control over their environments. Their approach combines thoughtful hardware design with practical compatibility, enabling homeowners and enthusiasts to build connected systems that meet real needs across diverse living spaces.
About Zigbee
Zigbee is a wireless communication protocol that’s key to building smart home ecosystems. It uses low-power radio frequencies for short-range device communication, focusing on automation and control. This makes it perfect for smart devices like lights, sensors, and locks that need reliable, low-bandwidth connections. Plus, its energy efficiency allows battery-operated devices to last for years without needing new batteries.
One of Zigbee's cool features is its mesh networking, which lets devices relay signals to one another, extending communication range throughout your home. Each device serves as a node that helps improve reliability, especially in larger spaces where Wi-Fi might struggle. Adding devices to your Zigbee network is easy and doesn’t drain power, making it a great choice for smart home setups.
Zigbee works well with many devices and platforms like Home Assistant. Users can control their gadgets effortlessly with apps, voice commands, or automation routines, all while enjoying secure communication thanks to built-in encryption. As more brands embrace Zigbee, it has become a go-to for creating connected smart homes that make life easier.
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