What is a sync module that is 4 wires in and 4 wires out that works with 4nacs outputs as I need sync for old mechanical horns and strobes
As far as I for one know there is no such thing: all sync modules that I’m aware of have only 2 wires out as the devices they’re designed to work with are only 2-wire. Also pretty much all non-electronic notification appliances can’t be synced, as most of them were made &/or designed before sync became a thing (plus the fact that they can be synced by simply pulsing the NAC that they’re all connected to, as they’ll all sound at the same time unlike some electronic signals).
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