I thought will never arrive
I wasted my money. Poor circuit designed tester, expensive for what I get, not worth for money. Tester itself is not reliable, the numbers on LCD are not reliable, sometimes it shows 110V AC instead of 220V, it can't find breakpoint in cases with many wires like a breaker panel, the wire I'm testing has not voltage but the tester still showing a lightning bolt signal because of surrounding good wires. Manufacturers should make standard or useful products, but they are wasting precious resources and making more trash just for the money.