The IC-485S is a hardware solution to the problem of converting signals between two standards. Data transfer can take place at up to 1200m (4000'), over four- or two-wire cable for full or half duplex, respectively. The converters can handle any RS-485/RS-422 device allowing it to function as a short haul modem or interface converter. Request to send (RTS) selection allows up to 32 receivers to be set up in a multidrop installation, making for a cost effective network configuration. The IC-485S is a bi-directional interface converter for RS-232 and RS-485. With the IC-485 series, it provides Point-to-Point, Multidrop and Simplex operations. The IC-485S also provides an extra Monitoring function. Two slide switches are used to configure its operation mode, contention control, and assignment of the RS-232.