All-inclusive train air horn solution;High-efficiency & extremely loud;Stainless steel diaphragms won't rust;Manifold-less design for flexible installation;Heavy duty compressor for faster fills;All standard mounting hardware;5-7 second max honk time;Can be heard from almost 4 miles away;Includes: Shocker S4 Train Horns;Viair 444C chrome compressor, 2 Gallon air tank;HornBlasrers 110/150 PSI pressure switch;Remote mountable intake filter assembly;10 ft of 5/16 D.O.T. approved airline;17 ft of 1/2 D.O.T. approved airline;6 ft of 3/8 air line (for intake);18 ft of 12ga power wire;1/2 NPT electric solenoid valve;HornBlasters 200 PSI air gauge;Brass NPT fittings kit including safety valve and blow-off;Wiring & plumbing kit, air filter cartridges;Mounting hardware, detailed instructions, earplugs;California Residents: WARNING Powerful, insanely loud, and all in a compact kit. The Conductor's Special 244 delivers the performance you need! It features the insanely loud, American-made, Shocker Horns. These horns are ridiculously loud and, more importantly, actually sound like a train! The horns are hand-tuned in the USA to the government mandated train signal chord. Simply put, they sound completely authentic. Coupled with these impressive horns is a HornAir 244 air system. The 2 gallon (7.6 liters) tank can recharge from 110 to 150 PSI in just under 1 minute and 30 seconds! This is because we matched Viair's flagship medium duty quick-recharge compressor, the 444C. Simply put, this is the best 150 PSI compact train horn kit currently available. It's designed specifically for smaller vehicles where larger tanks may not fit. The compressor is overpowered (200 PSI capable, constant duty, and powerful!) to ensure the best reliability, and only pulls 19 amps at its peak. At 150 PSI, the Shocker horns are simply ridiculous!