Modern-day fire alarm systems will often be integrated with other systems or monitored externally. Electronic Alarm Communicator Transmitters (DACT) hook up the fire alarm process to an external monitoring assistance, usually working with cellular phone lines. Infrared flame detectors are generally useful for locations wherever flames emit a strong infrared https://wireless-fire-alarm-syste02239.theblogfairy.com/34448547/fire-alarm-systems-no-further-a-mystery