The serial input/output GRV-CSERI-4 module from Opto 22 plugs into a groov EPIC chassis to provide a mix of analog, discrete and serial signals from any location. This new module provides four independent and isolated serial ports and communicates with RS-232 or RS-485 serial devices. Up to four modules can be installed on the chassis for a total of 16 serial ports, with programmable termination and bias, as well as half- or full-duplex options in RS-485 mode. Baud rates of up to 1 Mbps are supported. 800-321-6786; www.opto22.com