Features:
1.6×1.5V batteries, more durable.
2.Bigscreen design with big font display and LED backlight.
3.Voltage:250V/500V/1000V
4.Press Lock function in measuring.
5.Protection optimized, enable to bearing surge of short-curcuit
and residual voltage
Summarize:
AC voltage /Insulation tester adopts DC voltage changer which is low
consume, carried high voltage ratio and inductanse power stored.
Widely use in solving problems of electrical equipments and system.

Note:

Medium resistance is a measuring lower value which indicates and ensures that
when operating the voltage won’t be lower than 90% of the tested voltage.

AC Voltage measuring:

AC frequency response: 40Hz~400Hz
Display: Sine-wave RMS (Average)