Nano Low Pressure Sodium Lights Energy saving, 50% off High lighting ... RateNormal light sources transfers at less than 50% electric to lights, LED at about 20%. 80% of electrics ... time, NLPSL transfers more than 80% electrics to lights.3)High Luminous FluxDue to high lighting effectiveness, LPSL ... LPSL is 589.0nm and 589.6nm. These lights are most sensitive to human eyes, with no aberration ...