ock-stop location when sarting and stopping.Can't auto-reset to provide mistake operating.
U.为双控选择开关.Double-control option switch
V.电压换相测量转换开关.Change-over switch for voltage phase-changed measuring.
W.1个2常开自动复位按钮,左右一样. One self-reset button with two normally open contact,the left is as same as the right.
X.为2个2常开触点的自动复位按钮。