UEi Test Instruments DTH880 - Manual (Page 2)

Introduction
The DTH880 mounts easily on walls or sits on flat surfaces using its
built-in easel stand. Use the DTH880 at home or business. Ideal for use
in computer rooms, laundry rooms, shops, offices and greenhouses.
Features include
• Temperature in ˚D or ˚C (32 to 122˚F/0 to 50˚C)
• 25 to 95% relative humidity (RH)
• Comfort zone indicator
• Displays relative humidity and temperature at the same time
• MIN/MAX record
• Data hold
C o n t rols and Indicators
1. ˚C/˚F Function: This button switches between ˚C and ˚F.
2. Hold Function: Holds the measurement on the display.
3. Comfort Zone: A “COMFORT” indicator is displayed when
temperature is between 62.2˚ and 70.6˚F (18˚ and 22˚C) and RH is
between 45% and 65%.
Operating Instructions
Record Function
1. Press the “MIN/MAX” button to display minimum temperature
and RH.
2. Press the button again to display maximum temperature and RH.
3. Press the button a third time, will display current temperature
and RH.
4. Press the “CLR” button to clear minimum and maximum records.
The LCD will display MIN and MAX simultaneously for about
1 second.
DTH880-MAN P. 1
M a i n t e n a n c e
Cleaning
Periodically clean your instruments case using a damp cloth. DO NOT
use abrasive, flammable liquids, cleaning solvents, or strong detergents
as they may damage the finish, impair safety, or affect the reliability of
the structural components.
Battery Replacement
Replace the battery when “BAT” is displayed.
1. Remove the two screws from back cover to remove the cover.
2. Check polarity when replacing battery.
NOTE: Occasionally, an irregular display may appear after
replacing the battery. Simply re-install the battery and the unit will
resume normal operation.
S p e c i f i c a t i o n s
Range
Temperature 32 to 122˚F (0 to 50˚C)
Humidity 25% to 95% RH
Resolution
Temperature 1˚F/C
Humidity 1% RH
Accuracy
Temperature ±2˚F/1˚C 32 to 104˚F (0 to 40˚C)
±4˚F/2˚C below 32˚F/0˚ or above 104˚F/40˚C
Humidity ±5% RH: 40% to 80% 59˚ to 104˚F/15˚ to 40˚C
±7% RH: below 40% or over 80%
Battery 1.5 Volt, lasts 1 year or more