As the basis for the Monitor XL security system, the XL Monitor Control Panel contains the complete user database, all system information and operates independently in non-volatile memory. The Prime base model supports 1,000 users, while the Enterprise model supports up to 4,000 users, or up to 64,000 with additional memory.

Each XL panel can be configured using either the Monitor XL LCD Keyboard module or the Director software. The LCD Keypad also functions as a complete configuration and diagnostic tool, allowing a technician to repair and configure the control panel without disconnecting the other modules.
Each XL panel includes 12 inputs and can be expanded to 256 by adding LCD keypads and expansion modules. As part of a 250-panel XL network system, the Software Director supports 64,000 inputs per database, adjustable using any of the 16 pre-configured or customizing 20 point formats. 16 diagnostic points enable system tests.