4IZOK Input-Output Isolation Board provides isolation between PLC or computer and peripherals. Input and output, PNP or NPN can be selected independently of each other. In this way, it allows NPN-PNP conversion between input and output. In addition, thanks to its wide input voltage level, it allows level transitions between input and output voltages. Thus, it can be used in conversions such as connecting a 5 volt encoder to a 24 volt PLC or a 24 volt PLC output to a 5 volt computer. Thanks to its size, it provides ease of assembly.