Knowledgebase
| Word | Description |
| Infrared | The region of the electromagnetic spectrum bounded by the long-wavelength extreme of the visible spectrum (approximately 0.7 m) and the shortest microwaves (approximately 0.1 mm). |
| Infrared Camera | Infrared cameras (aka night vision cameras) have special infrared lights installed around the perimeter of the camera lens. This provides special light that the camera uses to capture a good picture even in total darkness. |
| Installer Code | A (usually) four-digit code that allows access to the alarm system to configure and program various functions. Normally, the installer code cannot arm or disarm a system, and the code only works while the system is disarmed. |
| Iris | The iris (on some lenses) controls how much light is let into the camera lens. |
