<ul><b>NOTE: This sensor is supported by open Z-Wave systems ONLY. It will not work with Wink or Z-Wave alarm panels.<br>Please contact seller if you're not sure your hub is compatible.</b><br><br><ul><b>SPECIFICATIONS:</b><li>Model Number: ZSE40 VER. 2.0</li><li>Z-Wave Signal Frequency: 908.42 MHz</li><li>Power: 1 CR123A battery (included)</li><li>Z-Wave Range: Up to 100 feet line of sight </li><li>Operating Temperature: 5-104° F</li><li>Installation and Use: Indoor only</li><li>Dimensions: 2.25" x 2.25" x 1"</li><br><br><b>Will it work with Alexa?</b><br>Amazon Echo is not a Z-Wave controller so you will need a compatible Z-Wave hub to get readings from this sensor from Alexa.<br>Alexa-compatible Z-Wave hubs include:<br><li>Fibaro Home Center Lite</li><li>SmartThings</li><li>VeraPlus</li>