... manufacturer 2.Silver/Silver Alloy Contact Point 3.OEM or Custom made Service 4.CE approval OFF-ON switch, Rotary Switch/Cam Switch,Selector Switch 16A ... , 12 positions5. 1, 2, 3, 4, 5, 6 stage with many different panels and buttons:a. Ammeter rotary switch: OFF-R-Y-B ... , OFF-R-S-Tb. Voltmeter rotary switch: TR ...