Description : Display Indoor and outdoor relative humidity , wind point temperature , 12 or 24 display . Records Mix / Max indoor and outdoor temperature , humidity . Designed with weather forecast tendency arrow , perpetual calendar , time and time alarm setting and Weather alarm modes for temperature . Temperature display in degrees or celsius . Can be horizontal mounted or vertical mounted . time and date with manual setting option ( DCF , WWVB selectable ), synchronized instant reception for outdoor . Wind direction ( N , S , W , E , NE , SE , SW , NW ) display with LCD compass and wind mph , km / h , m / s , knots , Bft or gust . Also , weather forecast display by weather icons ( sunny , Overcast , cloudy , rainy , snowy ). Specification : Outdoor temperature range :- 40 to + 60 Indoor temperature : 0 to + 50 Temperature accuracy : 1 . 0 Humidity range : 20 % to 90 % Humidity accuracy : 5 % Power consumption : Receiver : 2xAAA 1 . 5V Alkaline batteries Transmitter : 1 . 5V 2 x AA Alkaline batteries Battery life : station Size Chart : Size ( Approx .): 140mm x84mm x25mm / 5 . 5x3 . 3x0 . 98inch Package Includes : 1 Piece LCD Receiver Unit ( NOT Include Battery ) 1 Piece Remote Unit 1 Piece Manual 1 Piece Telemetry Sensor Installation Hardware Note : Please allow 1 - 3cm error due to manual measurement , pls not mind before Due to between different monitors , the picture may not reflect the actual the item , pls understand , thank you