Optilab Thermo-Hygrometer

Model THC-10

Product Description:

Combination of digital thermometer-hygrometer with Clock & Probe
Display Indoor Temperature and Humidity, Outdoor Temperature
Record the  MAX/MIN temperature and humidity 

Measuring Range :

Indoor Temperature -10'C to + 50.0'C, (14.0 to 122.0 )
Outdoor Temperature -50'C to + 70.0'C, (58.0 to 158.0 )
Humidity : 20% to 99% Rh

Model: THC-20

Technical Data:
Measuring Range: -50°C~+70°C or -58°Fwt158°F, 10%99%RH Accuracy: +/-1°C or +/-2°F between O~50°C,otherwise +/-2°C(4°F) +/-5% between 30%~70%,otherwise +/-8%
Display Resolution: 0.1°C or 0.1°F,1%RH °C/'F switch Ma, Min Temperature Records Date/Time display Operating Voltage:1.5V(AAA) Key Function: CLEAR:To clear the maximum and minimum value: MODE:To switch time and alarm ,hold it for 2s to set time; ADJ:To switch time and date,when setting time to add 1; C/F:To switch Celsius or Fahrenheit; MAX/MIN:To display the maximum and minimum temperature and humidity.
Operation Description: Put battery into the battery case,the screen will display all the word,after 3s, it will display time,the time is 12:00,date is 1/1. Hold MODE key for 2s, you can set minute,hour, 12/24 hour sysem,month,day, press Up key it can add 1",No key pressed in 1 minute,auto back.Press MODE key, into alarm mode, hold MODE for 2s,to set minute,hour for alarm.on alarm mode,press AD] key to chose four state (see the LCD display): 1.Display: 2.Display: To alert when the time is just in Alarm ON 3.Both display:Two function all ON 4.Both not display:Two function all OFF hour Press C/F key ,the value of temperature will display with Fah renheit, press it again,display with Celsius. Press MAX/MIN key ,it will display the highest and lowest tem perature and humidity with it was measured, then press CLEAR button to clear the memnory.