User Manual Q&AAnswer
Mar 20, 2025 - 02:54 AM
To turn on the KLEIN TOOLS ET40 Digital AC-DC Voltage Tester, press and hold the Power On/Off button for approximately 1 second. When the tester is turned on, the Power On/Low Battery indicator will be continuously illuminated. To turn off the tester, press and hold the Power On/Off button again for approximately 1 second. The tester will automatically power off after 2 minutes of inactivity to conserve battery life.
Please refer to the "Operating Instructions" section of the manual for more detailed information and instructions on using the tester.
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