... metal halide lamp, sodium lamp, mercury lamp 35W, 70W, 125W, 150W, 250W, 400W, 600W, 1000W, 2000W Electromagnetic ballasts for HID lamps For HS:(high-pressure sodium) discharge lamp ... ) Low power consumption5) Provides long service life and super quiet 6) Low magnetic leakage and low raise temperature7) Watts: 35W, 50W, 70W ...