
Put the attached software CD into the CD drive of the computer, find the file. Choose
right driver version according to the operating system:
For Win7, Win8, Win10 - 64 bits operating systems choose "CH341SER[64bit]"
For Win XP; Vista; Win7 - 32 bits operating system choose "CH341SER[32bit]".
Section 2 S500-EX/TH/DT- USB Software Installation
1.7 Button function instructions
2.1 Install USB Driver & Software
2.1.1 Click [CH341SER]
5
Installation and Instruction
2
LOG button, turn logging ON/OFF
MAX/MIN button
Backlight button
Power button
(1) In the non-logging mode (standby), press to enter the logging mode, LOG
indicator and the number of current records will be displayed on the LCD.
(2) In the logging mode, press this button to exit the logging mode, LOG indicator
and the number of current records will disappear.
In normal working mode, press this button to view the maximum/minimum
measurement value and the upper/lower alarm thresholds.
In normal working mode, press this button to turn on/off the backlight.
In the power-off state, click this button to turn on the instrument. In the
power-on state, turn off the logging function first, and then press this
button to turn off the instrument.
Note: Press at the same time to lock/unlock the keys.