Electronic Ballast Suitable for MH & HPS lamp Energy saving ... 220V, 35W, 50W, 70W MH/HPS Electronic Ballast, Suitable For MH & HPS Lamp70W MH ballast, HPS ballastFeatures: Suitable for MH & ... intelligent control hot-start, immediately shutdown if the ballast fails to ignite lamp in 30 minutes, excellent ... distance: 2.5m Method of connection: connection line Lifespan: 50,000 hours Electronic Ballast