SMC Networks PFM7 Series Operation Manual page 48

<Operation -With security code input->
Locking
1. Press the button for 5 seconds or longer in measurement mode. [UnL] will be displayed.
2. Press the or button to select keys lock [LoC].
3. Press the button to store the setting and return to measurement mode.
Unlocking
1. Press the button for 5 seconds or longer in measurement mode. [LoC] will be displayed.
2. Press the or button to select keys unlock [UnL].
3. When the button is pressed, the security code must now be entered.
How to enter the security code
The first digit will start flashing. Press the
Press the button to set, and the next digit will start flashing.
If the button is pressed at the last digit, the first digit will start flashing again.
After the setting is completed, press and hold the
4. If the security code entered is correct, the display will change to [UnL].
Press any of the ,
If the security code entered is incorrect, [FAL] will be displayed and the security code must be entered
again.
If an incorrect security code is entered three times, [LoC] is displayed and the display will return to
measurement mode.
: If a key operation is not performed for 30 seconds while entering the security code, the measurement mode will return.
or
or buttons to release the key-lock and return to measurement mode.
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button to select a value.
button for 1 second or longer.
No.PF※※-OMJ0006-G