This is a Selco M3000 analog alarm annunciator or monitor.
- It is a compact 24-channel unit designed for marine and industrial applications.
- It monitors temperature, pressure, and other sensors with standard signal ranges (e.g., 0-20 mA, 0-10 VDC).
- The device has a 4×16 LCD display and LED indicators for alarms.
- It is often used for surveillance of engine, bearing, and water temperatures.


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