Reliable IoT SIM Connectivity for Secure, Multi-Network Global Communications

Ensure reliable connectivity for critical systems with ControlFreq’s multi-network IoT SIM cards. Ideal for alarm monitoring, access control, and remote communications, our SIMs offer secure, real-time data transmissions.

Overview

Uninterrupted Connectivity for Mission-Critical Systems

Our IoT SIM Cards ensure robust, always-on communication for a wide range of applications, from security and alarm monitoring to access control and industrial automation.

Designed for reliability, these SIMs support 4G-VoLTE HD audio and multi-network switching, ensuring fast data transmission, untra-clear HD voice and maximum uptime even in remote or high-security locations.

Applications

IoT SIM cards for Mission-Critical Applications

  • Fire alarm & monitoring systems

  • Car park entry systems

  • Security systems

  • ATM machines

  • Vending machines

  • ANPR systems

  • CCTV systems

  • Emergency lift phones

  • Info points

  • Help intercoms

  • 4G/5G routers

The UK’s Mobile Network Operators are decommissioning 3G services and gradually sunsetting 2G services to improve network efficiency and capacity for newer technologies such as 4G, 5G and the latest IoT frequencies.

Gov.uk

Connectivity

Reliable IoT connectivity including automatic multi-network switching & VoLTE audio service

ControlFreq IoT SIMs automatically connect to the strongest available network across all 4 UK networks — and global partner networks.

With seamless multi-network switching, the EvolveSIM connectivity eliminates coverage blackspot and reduces downtime, ensuring continuous connectivity for fire alarm monitoring, security systems, and remote industrial equipment.

Supporting 4G-VoLTE for audio calls with failover connectivity protection for mission-critical applications.

Single network Vodafone UK & EU / Global SIM cards with multi-network connectivity in any country are also available.

Benefits

Features & benefits

  • Ensure uninterrupted connectivity for critical communication systems with a secure, multi-network IoT SIM. Designed for fire alarms, security systems, access control, and remote monitoring, our solution delivers reliable communication across all major UK networks.

  • With 4G-VoLTE audio and  multi network failover, our IoT SIM cards provide long-term reliability as legacy communication infrastructure is phased out. Ensure your systems remain operational, compliant, and ready for future connectivity advancements.

  • Benefit from instant network switching, ensuring secure, encrypted communication without delays. Our IoT SIMs automatically connect to the strongest available network, reducing downtime and preventing service disruptions.

  • Built for mission-critical applications, our IoT SIMs provide low-latency, high-availability connectivity, ensuring real-time data transmission for alarms, monitoring, and remote management systems.

  • Stay connected even in challenging network conditions. Our IoT SIMs automatically switch between Vodafone, O2, EE, and Three, eliminating coverage blackspots and ensuring seamless, uninterrupted operation.

  • Get direct access to expert engineers for seamless setup, troubleshooting, and ongoing support of your IoT SIM connectivity solutions.

    Our dedicated support ensures your critical systems stay connected, reliable, and fully operational, providing uninterrupted multi-network connectivity and failover protection when it matters most.

Ensure Uninterrupted Connectivity with a Secure IoT EvolveSIM™

Ensure your business-critical systems remain online and protected with ControlFreq’s multi-network IoT SIMs. Speak to our team today to find the right solution for your needs.