I recently bought a second-hand Federal Signal Model 55 110/120v (according to the metal plaque on the unit) resonating horn. From searching all over, no one has any available diagrams that show or tell what wires are responsible for what (i.e., ground, neutral, power, etc.) and the videos I've found on Youtube have not described how to wire it at all.
The unit I bought has 3 wires sticking out, black, yellow, and blue. From some searching It appears that this resonating horn is AC powered, as far as I could find out.
Any help with getting the diagrams and how to operate this would be most appreciated!
The unit I bought has 3 wires sticking out, black, yellow, and blue. From some searching It appears that this resonating horn is AC powered, as far as I could find out.
Any help with getting the diagrams and how to operate this would be most appreciated!