EMERSON F145RF-1600 WIRELESS REMOTE INDOOR OR OUTDOOR TEMPERATURE SENSOR FOR USE WITH MODEL;1F98EZ-1621. 2 AA BATTERIES REQUIRED. REDUCES HOT AND COLD SPOTS IN THE HOME. WITH MOUNTING HARDWARE. COLOR:WHITE, DIMS:4-5/8"H X 3-1/4"W X 3/4"D. WEIGHT:3.2oz. (MADE IN CHINA) MFG/BOX.