51
11. Switching on and off
a) Turning on and off
• Make sure you have inserted batteries into the multimeter.
• The multimeter turns on when you turn the control knob into any position other than < OFF >.
- When you turn the multimeter on, a short function test will be conducted and all symbols will appear on the
display. The multimeter will beep when the test is complete.
• To turn the multimeter off, turn the control knob into the < OFF > position.
Always turn the multimeter off when it is not in use.
b) Automatic switch-off feature
The multimeter switches off automatically after 15 minutes if no buttons are pressed or the control knob is not rotated.
This protects the batteries and prolongs the battery life.
• The [ ] symbol will be displayed when the automatic switch-off feature is enabled.
• The multimeter will beep 3 times approximately 1 minute before it turns off. If a button is pressed before the
multimeter switches off, the multimeter will beep again in 15 minutes. You will hear a long beep when the multimeter
switches off.
• To turn the multimeter back on, move the control knob or press any button.
Disabling the automatic switch-off feature
1. Turn the multimeter off and hold down the SELECT button.
2. Turn the control knob into a new position.
3. The multimeter will switch on and the [ ] symbol will no longer be visible on the display.
- The automatic switch-off feature will remain disabled until the multimeter is turned off using the control knob.
12. Backlight
The multimeter automatically switches the backlight on and off according to the ambient brightness. The ambient
brightness is measured by the light sensor (3).
• [ ] is displayed when the automatic backlight feature is enabled.
• To prevent the backlight from switching on automatically, press the
button (14).
- The automatic backlight feature will be automatically re-enabled the next time you turn the multimeter on.
