A collector comprising: a housing with an inlet port; a suction unit housed in the housing and configured to suck in a fluid through the inlet port; and a circuit unit configured to be supplied with electric power from the battery pack to use and regulate the suction power of the suction unit, the housing including an attachment unit configured to receive, as a battery pack to use, any battery pack chosen from multiple different types of battery packs (BT1, BT2) having mutually different rated output voltages, the suction unit being configured to generate suction power based on electric power supplied from the battery pack to use and suck in the fluid through the inlet port, each of the multiple different types of battery packs (BT1, BT2) including a first communications connector and is configured to transmit battery information about an associated one of the rated output voltages via the first communications connector, the attachment unit including a second communications connector connectible to the first communications connector of the battery pack to use, the circuit unit receiving the battery information from the battery pack to use via the second communications connector and regulates the suction power of the suction unit in accordance with the battery information, the circuit unit regulating the suction power of the suction unit in accordance with control parameter data associated with the battery pack to use, the control parameter data being included in the battery information, characterized in that the circuit unit is increasing the suction power of the suction unit as the rated output voltage of the battery pack to use increases. a housing with an inlet port; a suction unit housed in the housing and configured to suck in a fluid through the inlet port; and a circuit unit configured to be supplied with electric power from the battery pack to use and regulate the suction power of the suction unit, the housing including an attachment unit configured to receive, as a battery pack to use, any battery pack chosen from multiple different types of battery packs (BT1, BT2) having mutually different rated output voltages, the suction unit being configured to generate suction power based on electric power supplied from the battery pack to use and suck in the fluid through the inlet port, each of the multiple different types of battery packs (BT1, BT2) including a first communications connector and is configured to transmit battery information about an associated one of the rated output voltages via the first communications connector, the attachment unit including a second communications connector connectible to the first communications connector of the battery pack to use, the circuit unit receiving the battery information from the battery pack to use via the second communications connector and regulates the suction power of the suction unit in accordance with the battery information, the circuit unit regulating the suction power of the suction unit in accordance with control parameter data associated with the battery pack to use, the control parameter data being included in the battery information, characterized in that the circuit unit is increasing the suction power of the suction unit as the rated output voltage of the battery pack to use increases.