Instant Push-to-Talk Across Maine
Connect your team instantly across Maine and nationwide with our multi-carrier LTE/5G network. Zero infrastructure required.
Network Infrastructure: Maine
Our multi-carrier backbone leverages existing LTE and 5G infrastructure across Maine, ensuring that your teams have a priority connection in major urban centers and rural corridors alike.
Statewide Roaming
Automatic switching between ATT, T-Mobile, and Verizon for 99.9% uptime in Maine.
Localized Nodes
High-density coverage in major hubs including Portland, Lewiston, Bangor.


Maritime & Tourism
Serving the Maritime & Tourism Sector in Maine
Rugged PTT for commercial fishing and coastal hospitality. Sentinel PTT provides the mission-critical reliability required for high-stakes operations across the state.
Tailored for Maine Teams
Custom talk groups and priority network access designed specifically to support Maine's Maritime & Tourism operations and critical regional infrastructure.
Ruggedized Hardware
Our devices are built to withstand the unique environmental challenges of Maine, from brutal winter freezes to heavy snowstorms.
Multi-Carrier Reliability
Our devices automatically switch between ATT, T-Mobile, and Verizon to keep your Maine teams connected everywhere.
Instant Deployment
No repeaters, no licenses, no infrastructure. Just power on your radios and start talking instantly across Maine.
GPS Dispatch
Track your entire fleet across Maine in real-time with our powerful PC dispatch console.
See Sentinel PTT In Action
Tell us about your team and we'll walk you through a live demo tailored to your industry. No commitment required - just a clear picture of what Sentinel can do for you.
