Truper MUT-50A Instructivo página 19

Remove the connection between the testing leads and the circuit being
tested, and turn the Digital multimeter power off before opening the
Digital multimeter case.
When servicing the Digital multimeter, use only the same model
number or identical electrical specifications replacement parts.
The internal circuit of the Digital multimeter shall not be altered at will
to avoid damage of the Digital multimeter and any accident.
Soft cloth and mild detergent should be used to clean the surface of
the Digital multimeter when servicing. No abrasive and solvent should
be used to prevent the surface of the Digital multimeter from
corrosion, damage and accident.
The Digital multimeter is suitable for indoor use.
Turn the Digital multimeter power off when it is not in use and take out
the battery when not using for a long time. Constantly check the
battery as it may leak when it has been using for some time, replace
the battery as soon as leaking appears. A leaking battery will damage
the Digital multimeter.
2. GENERAL CHARACTERISTICS
Display
LCD Size
Polarity Indication
Over-range Indication
Low Battery Indication
Range select
Operation Temperature
Storage Temperature
Battery Type
Dimension(HxWxD)
Weight
LCD, 3 999 counts updates 2/sec
55 mm x 31 mm
"-" displayed automatically
"OL" displayed
" " displayed
Auto or manual
0 °C to 40 °C, less than 80% RH
-10 °C to 50 °C, less than 85% RH
4.5 V DC x 3 battery AAA size
Carbon-Zinc of 1,5 V DC
155 mm x 75 mm x 35 mm
Approx 225 g (including battery)