4
5. FUNCTIONS KEYS
1.
ON/OFF
key
Press the key to turn the power ON and press the key once more>2 sec. To turn the power OFF.
2.
Mode
key
Press the key can select the state of MAX, MIN LCD will display the maximum values since the
instrument was last switched on or last reset.
3.
Unit
key
Press the key can change the parameter unit. Adjustable units: %RH/°C, td/°C,%RH/°F, td/°F.
4.
key
Press the key a
icon will display on the LCD and the readout held In. Press the key once more
to cancel the hold function.
Press the key >2 sec. the back light will be turned on, and the
icon will display on the LCD.
Press the key once >2 sec. the light will be turned off, and the icon will disappeared.
5.
Auto power off setting
When the meter is powered on, it is under auto power off mode. The meter will power itself off
after 20 minutes if no key operation. Cancelled auto power off function: press
Hold
key when power
on until the LCD display
AP OFF
, then press the
Hold
key again to confirm the setting.
6.
MAINTENANCE
1.
Cleaning Instructions
The meter may be wiped down with a wet sponge or cloth using a mild water based detergent or
anti-bacterial soap and rinsed under a gentle stream of cold water.
NOTE:
This unit is not designed for complete submersion or washing in water.
2.
Battery replacement
Use the following procedure:
When the battery voltage drop below proper operation range the
symbol will appear on the
LCD display and the battery needs to be replaced.
•
Press the battery cover and towards arrowhead direction to open the battery cover.
•
Replace the battery with three new 1.5V batteries (AAA)
•
Replace the battery cover.
