(A) Battery type smoke detectors may be used provided that the batteries mount to assure that the following conditions are met:
(1) All power requirements are met for at least one year's life, including weekly testing.
(2) A distinctive audible trouble signal is given before the battery is incapable of operating (from aging, terminal corrosion and the like) the device(s) for alarm purposes.
(3) For a unit employing a lock-in alarm feature, automatic transfer is provided from alarm to a trouble condition.
(4) The unit is capable of producing an alarm signal for at least four minutes at the battery voltage at which a trouble signal is normally obtained followed by seven days of trouble signal operation.
(5) The audible trouble signal is produced at least once every minute for seven consecutive days.
(6) The monitored batteries meeting these specifications are clearly identified on the unit near the battery compartment.
(B) Electric plug-in smoke detectors may be used and operated from a wall plug provided that the plug is fitted with a plug restraining device and provided that the wall outlet power supply is not
controlled by a switch other than the main power supply.
('88 Code, Title VIII, Ch. 100, § 8.77) (Ord. 173-6-82, passed 6-7-82; Am. Ord. 605-04-09, passed 4-20-09) Penalty, see § 151.99