Littelfuse RS485MS-2W Communications Module RS-485

The Littelfuse RS485MS-2W Communications Module is used for Modbus communication for Model 77x-type products including RM1000 and RM2000 HVAC system controllers. This module works through the use of RS-485 bus interface for data transfer over long distances with electrical isolation from the signal lines. It has a reset input which is remotely located and is supplied by the connected 77x product improving integration. The RS485MS-2W is especially useful in HVAC systems because of its anti-noise feature and its ability to accommodate multiple parts on a single bus, enhancing the network performance and in monitoring and control systems.