A property insurance endorsement that makes it a condition of coverage that the protective safeguards cited in the endorsement (such as an automatic sprinkler system or night watch guard) be in operation at all times except when the insurer has been notified of the impairment in protection.
Failure to maintain the protective safeguards in good working order or failure to notify the insurer of even a temporary impairment in protection suspends coverage until the protection is restored.