Honeywell C7189R1004 Wireless Indoor Sensor</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Factory calibrated， no field calibration needed</li><li>Installation is quick and simple</li><li>Operating Temperature Range; 35-114 Degrees</li><li>Small remote sensor matches any room decor</li><li>Includes 2 AAA alkaline batteries and mounting hardware</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31sSMuWFL2L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41cuVu-mYFL.jpg' noproxy></br>