How to test track light is good or bad:
1, choose a place that is not disturbed by the outside light, preferably at night, turn off other lights.
2, cold lamp body, immediately measure a position of illumination, record the reading at this time is “cold lamp illuminance”.
3, Keep the position of lamps and illuminance unchanged, lamps work continuously.
4, half an hour later, read the illuminance value here, record the reading is “hot lamp illuminance”.
5, if the difference between the two values (10~15%), the cooling system of the track lights is basically good.
6, if the two values are very different (greater than 20%), the heat dissipation system of this lamp is doubtful.