Electronic Ballast Suitable for MH & HPS lamp Energy saving up ... 50,000 hours 110-220V, 35W, 50W, 70W MH/HPS Electronic Ballast, Suitable For MH & HPS Lamp70W MH ballast, HPS ballastFeatures ... restart at 55°cElimination of lamp flicker ASIC built-in intelligent control hot-start, immediately shutdown if the ballast fails ... Method of connection: connection line Lifespan: 50,000 hours Electronic Ballast