YOKOGAWA ALR121-S51 S1 Industrial Communication Module
The YOKOGAWA ALR121-S51 is a robust limit alarm relay designed for industrial applications. Key specs include a wide operating voltage range of 100-240 VAC, SPDT contact output, and an adjustable setpoint for precise monitoring. It is typically used in process control systems for monitoring temperature, pressure, or flow, triggering alarms when limits are exceeded. Compared to the ALE111-S50, the ALR121-S51 offers enhanced reliability and a broader voltage compatibility, making it suitable for diverse industrial environments.
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