Daisy chained smoke alarms, in series, 2 wire conventional smoke alarms in custom homes does not meet hashtagNFPA 72 hashtagcode requirements ! hashtagfire hashtagsecurity hashtagalarm
This is the most common code violation in new custom homes in Texas.
29.11.2.2 A single fault on the interconnecting means between multiple-station alarms shall not prevent single-station operation of any of the interconnected alarms.
29.10.7.8.1 An open, ground fault, or short circuit of the wiring connecting input or output devices to the single or multiple-station alarms shall not prevent operation of each individual alarm.
To daisy chain smoke alarms in series is prohibited, is against CODE!
