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The Potter Electric Signal Co. US MRS is a main/reserve switch designed for use in fire alarm and life safety notification systems. This component allows technicians to toggle between main and reserve power or signal paths within speaker and strobe notification appliance circuits. It is a single-unit device intended for installation by licensed fire alarm or low-voltage electricians working on commercial or industrial life safety systems. The MRS provides a reliable switching solution where redundant signal routing is required by system design or code.
The MRS is suited for speaker and strobe category applications, commonly found in commercial buildings, institutional facilities, and other occupancies requiring compliant fire alarm notification systems. It is installed as part of a larger fire alarm control panel network or notification appliance circuit where main and reserve path selection is necessary to meet system design specifications.
Designed as an OEM-style replacement or direct addition for speaker and strobe notification appliance circuit systems requiring main and reserve switching capability.
Installation should be performed by a licensed fire alarm technician or low-voltage electrician in accordance with NFPA 72 and applicable local codes. De-energize the fire alarm control panel and notification appliance circuits before servicing or installing this switch. Follow the system manufacturer's wiring diagrams and the authority having jurisdiction requirements when integrating this component into an existing or new circuit layout.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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