Klein Tools ET270 - Function Buttons Operation; Power ON;OFF; GFCI Test Button

7
FUNCTION BUTTONS
ON/OFF
To Power ON the tester, rotate the Function Selector switch
2
from
the OFF setting to any measurement setting. To Power OFF the tester,
rotate the Function Selector switch
2
to the OFF setting. By default,
the tester will automatically Power OFF after 15 minutes of inactivity.
Reactivate tester by pressing any button. To deactivate the automatic
Power OFF feature, power the tester ON with the "HOLD" button
9
depressed. When automatic Power OFF is deactivated, the
symbol will not be visible in the display.
"HOLD" (DATA HOLD) BUTTON
9
Press the "HOLD" button to hold the measurement on the display.
Press again to release the display and return to live measuring.
Also used to deactivate auto Power OFF feature (see ON/OFF
section above).
"RANGE" BUTTON
7
The tester defaults to auto-ranging measurement mode . This
automatically determines the most appropriate measurement range
for the testing that is being conducted. To manually force the tester
to measure in a different range, use the "RANGE" button:
1. Press to manually select measurement range (
is
deactivated on the LCD). Repeatedly press the "RANGE" button
to cycle through the available ranges, stopping once the desired
range is reached.
2. To return to auto-ranging mode, press and hold for more than one
second (
is reactivated).
"MAX/MIN" BUTTON
8
When the "MAX/MIN" button is pressed, the tester keeps track
of the minimum and maximum value of the measurement as the
tester continues to take samples. The first press displays the Max
value, the second press displays the Min value. To return to normal
measuring mode, press and hold for more than one second.
"CLEAR"/BACKLIGHT BUTTON
6
• Press the "CLEAR"/Backlight button to exit hold mode; this will
reset the LCD
1
to display " "
X
, OPEN
P
, and HOT
R
when not connected to a circuit.
• Press and hold for more than one second to turn the LCD
backlight on or off. The backlight automatically turns off after
approximately 3 minutes.
"GFCI" BUTTON
10
To initiate an electrical fault press the "GFCI" button with the
Receptacle Test Cord
12
inserted into the front jacks of the tester
3
,
4
,
5
. The tester will create a 6mA to 9mA ground fault to trip the
GFCI device. See GFCI TEST section in OPERATING INSTRUCTIONS
for more information.