The National Fire Alarm and Signaling Code 2019 of Maine - 29.10.9.10.6 writes the following:
A dedicated cellular telephone connection shall be permitted to be used as a single means to transmit alarms to a constantly attended remote monitoring location.
Both radio and cellular are safe ways to set up an alarm system in Maine but it is best to review this with both your carrier and trusted alarm system provider. Radio may actually be the best because there will be no sunsetting the technology (like there will be with POTS, 2G, or 3G).
While SOL Communications is a Maine-based business, we specialize in helping business owners from anywhere in the United States manage their technology. Let us know if your business is in the middle of trying to figure out how to associate your telecommunication needs with your fire detection or security alarms. Our goal is to ensure you have the best technology for your needs at the most affordable rate.