ZWL-300 LED lumen Testing Eqipment--These systems comply with CIE standard. Characteristics 

1.Interior constant current source (0-1500mA can be extended), LCD display.

2.These measurement systems with full testing fixtures are applicable for all kinds of light source.

Advantage: good compatibility and low cost;

3.Light intensity, Color testing can be extended.

4.To provide I-Iv, I-Vf, θ-Iv curve analysis for your R&D stuff.

lumen tester