Central Vacuum 30ft 2 way hose Blackhawk electric powerhead kit Nutone Beam Eureka 2-way crush-proof lightweight 30 ft Electric hose. Powerhead color may vary: black or grey according to availability The on/off switch is for the powerhead only. The suction starts immediately when you plug the hose into the wall valve and to stop the suction, you unplug the hose Fits 1.5 inch inside diameter wall valves. "Pigtail" or "Direct Connect" configuration available. Please specify upon purchase. If no hose configuration is specified, "pigtail" will be sent as pictured Free Technical support, please call: 929.800.2980