One Network Across All of Europe
Sentinel PTT connects your teams across 37 European countries with automatic multi-carrier roaming. Cross borders without dropping a call - no infrastructure, no SIM swaps, no dead zones.
100+ Roaming Partners. Zero Handoffs.
Sentinel's multi-carrier SIM automatically roams across 100+ carrier agreements in 37 countries, selecting the strongest signal in every location - seamlessly and invisibly.
Plus 90+ additional regional carriers across all 37 countries - including A1, Telenor, Tele2, Three, Movistar, Cosmote, Bouygues, SFR, Proximus, and Wind Tre. Your device always selects the strongest signal with no carrier bias.
Note: Multi-carrier roaming capabilities depend on device hardware. Not all devices support the frequency bands for every European network. Contact our team to verify device compatibility for your required coverage area.
Regional Use Cases for Every Sector
From cross-border freight to city-wide security, Sentinel delivers the mission-critical reliability European teams demand.
Cross-Border Transport & Logistics
Fleets moving between the UK, France, Germany, and beyond stay connected without swapping devices, SIMs, or talk groups at the border.
Large-Scale Events & Venues
Stadiums, festivals, and conference centres need instant coordination across security, catering, and operations teams under one network.
Public Safety & Security
Guards, patrol teams, and first responders get priority-grade push-to-talk with encrypted voice and GPS location.
Manufacturing & Utilities
Multi-site factories, energy grids, and utilities coordinate plant-to-field comms with reliable coverage and sub-second call setup.
Seamless Roaming for Cross-Border Teams
A freight driver leaving Calais for Frankfurt doesn't change talk groups. A security firm working a multi-venue event in Amsterdam doesn't reconfigure radios. Sentinel's multi-carrier SIM keeps every team on the same network as they move across Europe.
- Automatic network selection at every border crossing
- Same talk groups and dispatch console across all countries
- Wi-Fi fallback for warehouses, tunnels, and urban canyons
- GPS tracking and location history for the whole fleet
Built for Teams That Can't Afford Downtime
Multi-Network Roaming
One SIM automatically selects the strongest carrier across Europe - no manual network selection, no dead spots at the border.
Wi-Fi Fallback
Inside warehouses, basements, and dense urban buildings, devices fail over to Wi-Fi so push-to-talk never drops.
Distributed Servers
Geographically redundant infrastructure means no single point of failure - comms stay up even during regional outages.
Sub-Second Call Setup
Optimised for low-latency push-to-talk. Calls connect in under one second, even in congested city centres.
End-to-End Encryption
All voice and data is encrypted end-to-end, meeting the compliance needs of security and regulated industries.
Rugged Hardware
IP-rated portable and vehicle-mounted radios built for harsh European weather, dust, and daily industrial use.
Common Questions
Do Sentinel devices work across European borders without changing SIMs?+
Yes. The multi-carrier SIM automatically roams across supported European networks, so a driver moving from the UK through France into Germany stays on the same talk group with no SIM swap or manual network selection.
Which carriers does Sentinel use in Europe?+
Sentinel's multi-carrier SIM uses non-steered roaming with 100+ roaming agreements across 37 European countries. Major partners include Vodafone, Orange, Deutsche Telekom, Telefonica (O2/Movistar), Telia, Telenor, TIM, KPN, A1, EE, Three, and many regional carriers. Your device automatically connects to the strongest available network without carrier bias.
Does Sentinel work inside buildings with poor cellular signal?+
Yes. When cellular signal is weak - in warehouses, basements, or dense urban structures - devices automatically fail over to Wi-Fi so push-to-talk remains active without interruption.
Do I need to buy infrastructure or repeaters?+
No. Sentinel runs over existing LTE/5G and Wi-Fi networks. You power on the devices and start talking instantly - no towers, no licences, no repeaters to install or maintain.
Can I use Sentinel outside of Europe as well?+
Yes. Global PTT roaming is available for teams that operate internationally. Contact our team to enable international data plans for your deployment.
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.