Prokit's Industries MT-4014 - Manual (Page 10)

2. BATTERY REPLACEMENT
Use the following procedure:
When the battery voltage drop below proper operation
range the symbol will appear on the LCD display
and the battery need to be replaced.
 Press the battery cover and towards arrowhead
direction to open the battery cover.
 Replace the battery with three new 1.5V batteries
(AAA).
 Replace the battery cover.
WLS210
2