The FireX? 406, 406C, 421, and 428 smoke alarms are ionization 120 VAC smoke alarms. These units have an 85 decibel horn, test switch and a lighted power/alarm LED indicator; the LED flashes once per minute to confirm AC power. When in alarm, the LED flashes rapidly once per second. When interconnected with other FireX smoke alarms, the unit that initiates an alarm will display the rapidly flashing LED while the other interconnected alarm LED's remain extinguished. These units mount to any single or 4" octagon junction box or square-to-round drywall ring and have 8" long pigtails with a Quick Connect harness for permanent connection. FireX AC smoke alarms are for single or multiple station use (the 421 is single station only) and interconnect with other FireX smoke alarms. These FireX units should be placed in single-family households or in each individual living unit of multiple-family buildings.
421
AC Ion Single Station