Sodium Lamp: LP-AI-HPS100 Wattage (W): 100 Lamp Voltage (V): 54.3 Lamp Current (A): 2.22 Lumens Output (Lm): 9582.2 Light Effency (Lm/W): 96 Power Ratio cosˆ: 0.83 Color Temperature(K): 2041 Color Rendering (Ra): 25