The emphasis is on fire safety: Ajax's FireProtect detectors sense smoke and heat, and the Plus and 2RB models also include a carbon monoxide sensor. Detectors marked EN54 are aimed at sites where that standard is required, while an ordinary wireless model is enough for home use. The same group holds sirens as well as the bases, I/O modules and 72 hour backup batteries that belong with the detectors, bought separately to complete a system already installed.
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The emphasis is on fire safety: Ajax's FireProtect detectors sense smoke and heat, and the Plus and 2RB models also include a carbon monoxide sensor. Detectors marked EN54 are aimed at sites where that standard is required, while an ordinary wireless model is enough for home use. The same group holds sirens as well as the bases, I/O modules and 72 hour backup batteries that belong with the detectors, bought separately to complete a system already installed.