These control units are the final part of the CAV centralised dust suction system, i.e. a handy control interface at the work place, suitable for the remote starting of the suction unit. They feature all utilities required for operation in industrial environments and car body shops (compressed air and suction). Suction tube inlet can be either from the top or from the side wall. These service control units comply with the following directives: 89/392 CE, 91/368 CE, 93/44 CE, 93/68 CE, 73/23 CE, 98/37 CE, 89/336 CE