Product Label: GM1362 Features:Resolution:0.1??/0.1%RH; 1. Humidity & temperature measurement2. Temperature Range: -10 to 50??￡?-14¨H to 122¨H (?à0.5??)3. Humidity Range: 5%RH to 98%RH(?à3%RH)4. ??/¨H selection5. LCD backlight display6. Low battery display7. Auto power off8. Power supply: 9V battery(not included)Application:Humidity & temperature meter are widely apply on1. Lab2. Warehouse3. Air conditioning system4. Quality control etcDirection To Use1. Open the battery door to insert 9V battery (006/NEDA1604/IEC6F22).2. Turn on: Press on ON/OFF key for 1second and get ready for operation after full display on LCD.3. Turn off: Press on ON/OFF key for 3 seconds and release the key after on display on LCD.4. Backlight: After turning on and press the ON/OFF key again to activate backlight and the backlight will be inactivated if there is no further operation of the key for 30 seconds.5. Unit shift between ??/¨H: As in turning off press the MAX/MIN key then rurn the unit off and release all the keys after all display on LCD and then ??/¨H unit shift functions.Package:1 x humidity temperature meter 1 x User Manual