In the this mode, press HOLD key to stop the recording of readings, all values are frozen, press again to restart recording.
To prevent accidental loss of MIN, MAX and AVG data, in this mode can only be cancelled by pressing and hold down the MIN MAX key for 2 seconds to exit and erased recorded readings.
WARNING
MIN, MAX and AVG readings can be recorded for a period of up to 20 hours maximum. If this 20 hours period is exceeded the unit readings will not be accurate.
7REL Relative mode (only Main display)
Pressing REL key to enter the Relative mode, zero the display, and store the displayed Reading as a reference value and annunciator REL is displayed. Press REL key again to exit the relative mode.
The relative value can also be entered by the user. (See "SET mode" later in this manual.)
When the desired Relative value has been entered, press REL key to enter the Relative mode, press SET key use set Relative value as a reference value. Press REL key again to exit the relative mode.
In the Relative mode, the value (can not >±3000.0 counts) shown on the LCD is always the difference between the stored reference and the present reading.
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