The GT240 Mains Powered Smoke Alarm is specifically designed to continuously monitor smoke concentration. Adopting an advanced split-spectrum photoelectric chamber and a built-in high-volume buzzer, it responds quickly and becomes highly sensitive with stable performance and low false alarma.  Smoke alarms can be interconnected via a hardwired or wireless system.
N.B. For wireless interconnection the GTRFM is required to be installed into the GT240L smoke alarm.