In new residential dwellings, smoke detectors shall be powered by self-monitored battery or wired directly (hard-wired) to the building's power supply. In existing dwellings within multi-family buildings of ten units or more, the detectors shall meet the multi-family building power source requirements of City or State law, or in the absence of such law, the requirements hereunder covering other existing dwellings. In other existing dwellings, it is preferred that smoke detectors be wired directly to the power supply; however, detectors may be powered by a self-monitored battery or operated in a plug in an outlet which is fitted with a plug restrainer device, provided the outlet is not controlled by any switch other than the main power supply.
(Ord. 81-1978. Passed 1-22-79.)