Knowledgebase
| Word | Description |
| Keybus/data bus | The set of connections on an alarm system that allows other digital devices to communicate with it. Keypads and expansion modules are among the devices that would be connected to these same terminals. Most systems use 4 wires, but the number can range from 3 to 6. |
| Keypad / Touchpad | A remote device that allows a user to control an alarm system by pressing keys numbered 1 through 0. In addition to the keys, almost all keypads have some means of displaying information to the user about the system. The keypad is not the Control Panel, although in some wireless systems, the keypad is mounted directly on the control panel. |
