Checkline DT-107A - Manual (Page 5)

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4.0 INSTALLING/REPLACING BATTERIES
1. Loosen the two black screws at the bottom
edge of the tachometer using a slotted
screwdriver or coin.
2. Remove the battery compartment cover
plate exposing the battery sleeve.
3. Insert the AA batteries observing the
proper battery polarity indicated on a
label inside the battery compartment.
Note: The DT-105A, DT-107A, DT-105A-12 and DT-107A-12 are designed
to automatically power off after five (5) minutes of “non-use” to conserve
battery power.
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7.0 BUILT-IN MEMORY SYSTEM
The DT-105A, DT-107A, DT-105A-12 and DT-107A-12 include a built-in
memory system capable of storing the last, maximum and minimum values,
plus 10 separate readings for recall to the display.
Storing Readings
Press the Memory Switch momentarily when the reading to be stored
appears on the display. An “M” will appear on the display briefly
indicating that the reading has been successfully stored in the memory.
A maximum of 10 readings can be stored in memory.
Note: The stored data will be deleted when the Tachometer automatically
powers off.
Recall Stored Readings
To recall stored readings to the display, press the Memory Switch. A stored
value will alternately flash on the display along with the memory location
number (1, 2. . .10).
Clearing Stored Readings
To erase all stored readings, press and hold the Memory Switch for five (5)
or more seconds until the display shows “CCCCC.” This indicates that the
memory was successfully erased.