M501MEA System Sensor Mini Input Module. The M501MEA is an addressable input module. It will interface with contact devices such as security contacts, waterflow switches and call points. It is capable of being collected in Class B wiring configurations. It provides a two-wire initiation circuit for normally open contact fire alarm and security devices. In addition to transmitting the supervised state of the monitored device (normal, open or short), the full analogue supervision measurement is sent back to the panel.
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