Specifications

Model UT90B: OPERATING MANUAL
20
●Overload Protection: 230V rms.
F. Diodes Test
Range Resolution Remark
1mV
Open-circuit
voltage is about 3V;
transistor PN
normal voltage is
about 0.5~0.8V.
Remarks:
●Overload Protection: 230V rms.
G. Continuity Test
Range
Resolutio
n
Remark
1Ω
Open circuit voltage is
about 3V; Set the
resistance of a open
circuit100Ω, buzzer will
not sound; Set the
resistance of a well
connected circuit≤10Ω,
buzzer sounds
continuously.
Remark:
●Overload Protection: 230V rms.
Fuse Replacement(see figure 9)
Warning
To avoid electrical shock or injury to the user
because of wrong readings of the Meter,
please inspect the damage of fuse inside