Introduction 1 
Your Multimeter in Brief
U1231A/U1232A/U1233A User’s Guide 23
Freezes and stores the present reading in the 
display (  mode).
• In Trig Hold-Log mode, press   to 
manually trigger the holding of the next 
measured value. 
• Press   for more than 1 second to exit 
this mode.
Automatically freezes the present reading 
once the reading is stable (  mode)
• In Auto Hold-Log mode, the reading is 
updated automatically once the reading is 
stable and the count setting is exceeded.
• Press   for more than 1 second to exit 
this mode.
page 72
Turns the LCD backlight on for 15 seconds 
(default) or off. 
Turns the LED flashlight on or off.
page 7 and 
page 7
Switches between the regular and shifted 
measurement function (icon printed in 
orange on the rotary switch function — if 
available). Press   again to switch back 
to the regular measurement function.
For U1233A only: Enables the non-contact 
voltage presence indicator. Press   for 
more than 1 second to exit this mode.
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Tab le  1- 6 Keypad functions (continued)
Legend
Function when pressed for:
Learn 
more on:
Less than 1 second More than 1 second