ALR121-S51 | Serial Communication Module Yokogawa RS-422/RS-485 Thermocouple/mV Input Interface Module Operating Temperature: -40°C to 70°C

Operating Temperature: -40°C to 70°C (-40°F to 158°F)

Switching Mechanism : High-side power MOSFET switches

Current Signal Normal Range: 0-20 mA

Real-Time Features: Poll response chaining supported

including redundant power supply

ALR121-S51 | Serial Communication Module Yokogawa RS-422/RS-485 Thermocouple/mV Input Interface Module Operating Temperature: -40°C to 70°COverview The Yokogawa ALR121 S51 is a dual port serial communication module designed for RS 422 RS 485 networks, supporting both point to point and multipoint communication modes. Interface Details Interface: RS 422 RS 485 (4 wire system) Connection Method: Point to point (RS 422), Multipoint (RS 485) Communication Settings Communication Function: Half duplex Synchronization Method: Start stop synchronization Transmission Speed: 1200 2400 4800 9600