Question

which of the following is not needed for a fire detection system to work properly?

1. follow all manufacturers guidelines for testing, maintenance, and cleaning
2. keep the system turned off at all times to conserve energy
3. regularly test and adjust the fire detectors for correct operation
4. replace or recalibrate any unreliable detectors

Explanation:

A fire - detection system needs to be on to detect fires. Keeping it turned off at all times defeats its purpose. Following manufacturer's guidelines, regular testing and adjustment, and replacing unreliable detectors are all necessary for proper operation.

Answer:

Keep the system turned off at all times to conserve energy.