Colour:WhiteDigital Indoor Hygrometer Thermometer High Accuracy Specifications Temperature Measurement Range: -10~+50 (+14~+122) Temperature Measurement Accuracy: &Plusmn; 1 (1.8) Temperature Resolution: (0.1 (0.2) Humidity Measurement Range: (10%~99% Rh) Measurement Resolution Humidity: 1% Use Battery: Aaa1.5V Operation Method 1. Button Function: [/F] Button To Switch /;[Mode] Switch The Display Mode Of Clock And Alarm / Set Current Clock, Alarm Clock, 12 Or 24 Hour System, Date [Adj] Adjusts Value Of Item 2. In The Initial State, Press And Hold [Mode] For 2 Seconds, Press [Adj] To Adjust The Number Of Minutes, And Press [Mode] Continuously To Adjust "Clock" , "12/24", "Year", "Month (M)", "Day (D)" 3. In The Current Clock Mode (The Colon Between The Clock And The Minutes Flashes Once Per Second ), Press [Mode] Once To Switch The Display To Alarm Mode (The Colon Between Clock And Minute Do Not Flash) , Press [Adj] You Can Switch The Function Switch &Ldquo;Alarm (Alarm )) / Function&Laquo; Timekeeping &Raquo;(), Then Press [Mode] For Two Seconds, You Can Set The Alarm Time And Start The &Laquo; Timekeeping By Hour &Raquo; Function, () Symbol Appears. 4. In Alarm Mode, If There Is No Operation, It Will Automatically Return To Normal. The Current Clock After One Minute. À At This Point, Press [Adj] Once To Switch To Adj. Calendar Display And Automatically Return To The Current Clock After 3 Seconds. 5. Press [Mem] To Display The Maximum (Max) And Minimum (Min) Temperature / Humidity. Memorized, Hold (Mem) For More Than 2 Seconds To Clear The Maximum / Minimum Value