H-B Instrument 75 DURAC 433MHz RF Remote Sensor for Outdoor Durac Weather Stations， Outdoor Range -20 To 60°C (-4 To 140°F)， Compatible with DURAC Weather Stations 692 and 694</br></br></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/41Kd2jqIITL.jpg' noproxy></br>