DY5500 Multi Function Tester price is available in sensotec website.
DY 5500 Features:
Ground resistance measurements from 0.01ohm to 2000ohms with 0.01ohm resolution
Measure insulation resistance to 2000M ohms
Test voltage 250V, 500V, 1000V
AC voltage measurement to 600V
Check phase sequence and phase status
Auto ranging, data hold, LCD backlight
Low battery warning
