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Both panels are technologically identical to each other. The only difference is the branding on the bezel, and the color scheme of the cabinet. I’d get the one that’s least expensive. But remember, they are EXACTLY alike.
To answer your second question, you will need some pull stations to activate the panel, a horn/strobe or two to sound the alarm, and a few 4.7k resistors for zone supervisory. For a list of devices that will work with an MS-4, click here.
2-wire or 4-wire:There’s no difference in the operation of the two, just the 4-wire models get their power from the 24VDC resettable power on the main board.
Your current devices will work on an MS-4. However, NEVER hook up newer (1994+) Simplex devices to an MS-4! They will die, due to the FWR current the NACs output.
Did you read Destin’s topic yet?
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