If the outer material is plastic, 4 poles, 2 poles, 8 screw terminals, the cover and rotary switch can be removed.The transfer switch is especially suitable for the electrical wiring of circuit breakers and squirrel cage asynchronous motor starters.The control circuit can also be converted. The rotary switch design is easy to control, and the square plate is easy to assemble.This toggle switch is easy to use and has a long life. It can control generator start, reversible conversion, speed change, etc.Colour:As shownMaterial:PCPackage Contents:1 * Universal transfer switchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.