Does anyone know if the MS-4 has any relays? if so, are they programmable?
Yes, the MS-4 has an alarm relay, trouble relay, and a supervisory relay; they are not programmable.
Can the relays be made silenceable?
No, these relays are on until reset. There is an optional relay card, and the relays on this card can be set to silenceable. However, the on-board relays are non-silenceable.
What about the relays on the MS-5UD?
Those can be set to silenceable alarm