70W Electronic Ballast Suitable for MH & HPS lamp Energy saving up to ... : 50,000 hours 110-240V, 35W, 50W, 70W MH/HPS Electronic Ballast,Suitable For MH & HPS Lamp, BallastKey specifications: Input voltage ... aluminum housing is engineered to dissipate heat and keep the component cool Without noisy fans Completely silent and lightweight RF shielded ...