I-87065 has a serial bus (RS-485) communication interface with DCON protocol. It can be plugged into our WinCon, LinCon, I-8000 controllers and I-87K, RF-87K I/O expansion units. I-87065 is an SSR-AC (Solid State Relay-AC Type) Output Module with 8 channels. I-87065 is a serial cartridge based I/O module that offers the ultimate in cost effective flexibility.