3
MAINTENANCE
• Before moving the rear cover, disconnect the probe from the circuit to be
measured.
• To protect the internal circuit, replace the fuse with one of the same
specification:
F1 250mA/250V
F2 10A/250V
• Do not use the instrument until the rear cover is put back in place and the
screws have been tightened.
• Clean the housing instrument with a wet cloth and a small amount of
detergent, if required.
• Do not use chemicals, abrasives or solvents that may damage the
instrument.
This 3
½
digital multimeter features stable, high reliable and anti-drop
performance. It is provided with an LCD display, 15mm in height, designed for
clear reading. The circuit design takes LSI double integral A/D converter as its
core under the protection of an overload protection circuit, making it a superior
and handy instrument. It can be used to measure DC and AC voltage, DC
current, resistance, diodes, transistors, temperature and in-circuit continuity.
MEASUREMENT FEATURES
Features
IN07445 MAS830B IN07446
MAS838
Alternating Voltage
(V~)
ü
ü
ü
ü
Direct Voltage (V )
ü
ü
ü
ü
Direct Current (A )
ü
ü
ü
ü
Resistance (
Ω)
ü
ü
ü
ü
Diode ( )
ü
ü
ü
ü
Temperature (°C)
ü
On-Off ( )
ü
ü
ü
Data Hold
ü
ü
ü
ü
Backlight
ü
FEATURES
