... 3.OEM or Custom made Service 4.CE approval OFF-ON switch, Rotary Switch/Cam Switch,Selector Switch 16A ... control the direction of motor and other circuits.4. The switches have 2, 3, 4, 5, 6, 7, ... and buttons:a. Ammeter rotary switch: OFF-R-Y-B, OFF-R-S-Tb. Voltmeter rotary switch: ... ON-OFF rotary switchd. A-O-M rotary switche. FOR-OFF-REV rotary switchf. Delta start rotary switchg. Multistep switches: ...