Pressing and holding keys on the SR-2 controller will allow you to:

Pressing and holding keys on the SR-2 controller allows you to enter Guarded Access. This mode provides a level of security for the controller's functions that require a higher level of authorization than standard user access. It is designed to prevent unauthorized changes to critical settings and ensure that only trained technicians can access specific operational features.

In Guarded Access, certain functions and adjustments that may affect the performance or operation of the unit can be accessed. This is particularly important for maintaining proper operation and ensuring the reliability of the equipment.

Understanding the access levels is crucial for technicians as it helps them operate the equipment safely and in compliance with manufacturer guidelines.