It has one switch, that will turn your power unit and activate your suction.
24v-Cyclovac replacement hose handle
This is a replacement handle for your 24v-Cyclovac replacement hose handle. Low volt means it does not have 110v electric to operate an electric power nozzel. This replacement handle only turns the vacuum system on and off.
Regardless of the type of Cyclovac hose you have, this video should help you on the installation and repair part.