Electrochemical Detectors: These get the job done by making a chemical reaction when carbon monoxide is from the air. When the gas is detected, the alarm goes off. 6. Transceivers and Wireless Sign Repeaters Wireless signal repeaters and transceivers are used in huge amenities or structures with multiple fire zones https://wireless-fire-alarm-syste38269.spintheblog.com/39612797/the-5-second-trick-for-wireless-fire-alarm-systems