| Word | Description |
| Derating | All dimmers rely on heat conduction and convection to keep the electronic components cool. Derating is the reduction of the maximum capacity (load) a unit can reliably handle when fins/side sections are removed. |
| Digital timer switch | Where physical obstructions deter the use of occupancy sensors, the digital timer provides an effective means of controlling light sources and conserving energy. Most timers have various preprogrammed time allowances ranging from 10 minutes to three hours. As a safety measure, most timers offer a flashing function that quickly turns the connected lights on and off several minutes before shutting them off completely. |
| Dimmer | An electronic or manual switch that increases or reduces the amount of voltage that reaches the lamp. |