Can be applied for city illumination for 12 hours. The first 6 hours can be used as 250W and the next 6 hours can be used as 150W
The appearance and the connector of this power-changeable sodium lamp is same as a general lamps. The total power could be saved at 20%
Easy to replace the general 250W sodium lamps with this 250W/150W lamp system
Can be directly replaced and the ballast (must be inductive type) will be remained. A timing controller is series in AC input

Lamp: HPS-SX 250W/150W
Lumen output: 28, 000Lm/16, 000Lm for 250W/150W
Ballast: Power changeable special 250W HPS ballast (inductive type)
Ignitor: CD-2 ignitor
Timing controller: Low power (150W) starts work after 6 hours normal power (250W) work. The timing controller can be set freely
Glass shell type: T38/T46 or ED54/ED90
Lamp base: E27/MED/E40/MOG
Input volt: 220 - 240V (optional: 240V; 120V; 100V)