... 50,000 hours 110-240V, 35W, 50W, 70W MH/HPS Electronic Ballast,Suitable For MH & HPS Lamp, BallastKey specifications: Input voltage: ... :90°C (194°F)Special features: Operates both HPS and MH lamps Extruded aluminum housing is engineered to dissipate heat ... to reduce the RF interference Soft starting, increases lamp lifespan and reduces lumen depreciation Protection: output open/short circuit/ignition ...