When is the control unit for the alarm system permitted to be outside the monitored area?

The control unit for the alarm system is permitted to be outside the monitored area when it is supervised to annunciate tampering. This requirement ensures that even if the control unit is located outside the primary area being monitored, there are measures in place to detect and alert users if there is any unauthorized access or tampering with the unit.

Supervision of the control unit means that it is continuously monitored for any signs of interference or unauthorized access, thereby enhancing the security of the entire alarm system. By annunciate tampering, the system effectively signals any intrusions, ensuring that any potential threats are addressed promptly.

The other options do not provide sufficient safeguards or criteria to justify having the control unit outside the monitored area. For example, unsupervised units may lead to vulnerabilities without alerting the system owner to potential breaches. A secure zone does not inherently provide the necessary surveillance for tampering. Likewise, shielded wiring alone does not prevent unauthorized access to the control unit. Thus, supervision and tamper notifications are critical for maintaining the integrity of the alarm system when its control unit is positioned outside the monitored area.