Modbus RS-485 Adapter Product Type Modbus RS-485 Adapter Series Commercial Series Sub-Brand Macurco Features 8-Bit Dip Switch Address Selector Communication Is On A Modbus Serial Line Mounts Behind the Detector Inside of a Standard 4 in x 4 in Electrical Box The MRS-485 Monitors Sensor Type Gas Level and Trouble Status Communications Tricolored LEDs Indicating Power Test and Communication Status Overall Depth 1.75 in For Use With Macurco(TM) 6-Series Gas Detectors