8 Channel PLC DC amplifying board suitable for installation in the PLC and single-chip microcomputer control board controller of the digital output terminal, amplifying the output voltage and current, for large load power equipment and protective effect of PLC contact, such as plastic machinery, hydraulic machinery, mechanical foam, woodworking machine machinery, ceramics machinery equipment. Professional circuit design, with the self-test, over current, short circuit (self recovery protection), anti-interference and other protection circuit, safe and reliable. Power supply: DC 24V, single channel maximum output current: 5A, the input form: 24V DC, 1.5~24V high level input; Switching frequency: less than 1KHz, working temperature: -10~70'C; Storage temperature: -20~100'C.