308-1409BT-CBP Indoor Outdoor Temperature and Humidity monitor

308-1409BT-CBP Monitors Indoor Temperature (F/C) and Humidity (%RH) & Wireless Outdoor Temperature (F/C) (No Outdoor Humidity ) HI/LO recorded temperature values and trend indicators (Max/min temperature records) 12/24hr time display (manual set) Sensor signal strength and low battery indicators; transmission range over 330 ft (100m) Display: 2 AAA alkaline batteries and TX141-Bv3 sensor requires 2 AA alkaline batteries (batteries not included) Wireless Outdoor sensor for temperature (no Outdoor Humidity) Low Battery indicator Small Case, but easily read numbers Case size: 3.75" H, 2.75" W, 1.5" D Wall Hanging or Free Standing.