During what phase should fire alarm devices be particularly protected?

The correct choice is during the installation phase because this stage involves physically placing fire alarm devices into their designated locations and connecting them to the system. During installation, devices can be vulnerable to physical damage, contamination, or misconfiguration. Emphasizing their protection ensures that they remain functional and reliable. Proper handling, protection from environmental factors, and securing them from accidental damage are all essential actions taken during this phase to ensure the integrity and effectiveness of the fire alarm system once it is operational.

While testing, maintenance, and renovation are also crucial phases, they do not focus specifically on the inherent vulnerabilities associated with newly installed devices. Testing is primarily concerned with verifying functionality, maintenance focuses on ongoing support and repairs, and renovation may involve alterations that could impact existing systems rather than the initial protective measures needed for new installations.