YOKOGAWA ALR121-S51 Serial Communication Module
The YOKOGAWA ALR121-S51 is a limit alarm relay module designed for monitoring and controlling process variables. Key specifications include a wide operating temperature range (-20°C to 60°C), high accuracy (±0.1%), and multiple input types (thermocouple, RTD, voltage, current). It is typically used in industrial automation for safety interlocks and alarm systems. Compared to the ALE111-S50, the ALR121-S51 offers enhanced input flexibility and higher accuracy, while the ALP121-S00 provides similar functionality but with different alarm settings.
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