| Illuminance | THR-L739 ≥90000Lx (4 Steps Adjustable) | THR-739 ≥54000Lx |
| Color temperature | 4500±500K | 4500±500K |
| Color rendering index | Ra≥90 | Ra≥90 |
| Mains voltage | ~220V±22V,50Hz±1Hz; | ~110±11V,60Hz±1Hz |
| Rated voltage of bulb | 24V | 24V |
| Rated power of bulb | 25W | 25W |
| The lowest height for lnstallation | 2800mm |