Reliable SIM Card connectivity
when failure is not an option

Power your systems with advanced IoT SIM connectivity supporting fully redundant multi-network mobile coverage, enhanced security and reliable 7-day phone support.

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  • Multi-network roaming

    Automatic failover across major carriers keeps lifts, alarms, access control and CCTV online when one network drops.

  • Global coverage

    One SIM, worldwide reach—connect in 190+ countries on 600+ partner networks under a single contract.

  • Live visibility & control

    Real-time status and usage with alerts, suspend/resume controls and full history for diagnostics and billing.

  • Managed in-house & support

    Hardware, connectivity and cloud from one provider—provisioned by ControlFreq with UK-based, 7-day support.

The ultimate IoT SIM card for reliable multi-network auto-switch connectivity

Keep your devices connected anywhere in the world with a single SIM solution. ControlFreq IoT SIM cards deliver carrier-agnostic connectivity across 600+ networks in 190+ countries, ensuring your devices stay online by automatically switching mobile provider when needed.

Access all networks with a single SIM card

ControlFreq offer a single multi-network SIM card, managed in-house by an experienced team to ensure accurate provisioning for your application.

Trust your connectivity to a single point of contact provider delivering end-to-end solutions including hardware, software and reliable mobile connectivity deployed anywhere.

The ultimate IoT SIM card

Industrial-grade carrier-agnostic IoT SIM cards ensuring seamless connectivity on all accessible wireless mobile technologies. Supporting GPRS, 2G, 4G, 4G-VoLTE, 5G, LTE-M and NB-IoT. With private VPN and static IP also available, ControlFreq SIM cards are provisioned in-house for each order to ensure exact suitability.

Country 2G 3G 4G 5G LTE-M NB-IoT
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info 2G and 3G networks are being phased out globally. Future-proof your communications with reliable 4G, 5G, LTE-M, and NB-IoT to ensure for long-term connectivity.

Managed in-house for deployment and control

Manageable online database to keep SIM deployments organised, detailed and controlled. Advanced features like realtime and historical connection visibility, automations to trigger usage notifications and security to suspend SIM cards automatically on detected events.

Advanced IoT security

Between our intuitive IoT monitoring dashboard and our specialized IoT SIM cards, you benefit from crucial security features like network-based firewalls, SMS firewalls, IMEI locks, VPNs, connectivity profiles, and more.Get a free test kit — including three SIM cards, a prepaid data plan, and a 60-day free trial of our platform.

Cloud-based infrastructure

Our core mobile infrastructure is distributed globally across public clouds. This transmits your data through regional internet breakouts, boosting speed by routing data through the nearest servers. Our automated intra-cloud integrations use standard web services, ideal for when you're building or evolving your IoT solution.

Why Choose ControlFreq?

ControlFreq specialise in end-to-end IoT modernisation solutions for critical communications, monitoring and access control in widely deployed estates. We deliver reliability, real time visibility and expert technical support to ensure our customers maintain complete peace of mind as they rollout our IoT solutions.

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Global network coverage

Seamless connectivity across 190+ countries and 600+ networks for true worldwide reach.

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Live connectivity status

Monitor device connectivity in real time and identify issues instantly.

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Real-time cloud monitoring

Receive instant notifications for critical events through our WebAlarm Cloud.

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Global visibility

Gain network-level insight into SIM activity, performance, and usage anywhere.

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Single-source supplier

Hardware, SIM connectivity, cloud software, and 7-day support from one provider.

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7-day phone support

Speak to an expert when you need help, not just during office hours.

Our IoT hardware

Our IoT SIM cards are designed to work seamlessly with all Control Freq hardware — from critical communication devices to remote monitoring systems and access control solutions. One SIM for every application.

4G Landline Replacement Communicator settings_input_antennaCritical Communications
Digital 4G-VoLTE PSTN Alternative

Universally adaptable 4G digital-voice communicator providing uninterrupted communications for any system affected by the PSTN landline shutdown.

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Universal 4G Alarm Communicator device_hubRemote Monitoring
Universal 4G Alarm Communicator

Universal 4G alarm communicator designed to monitor and report critical alarm signals instantly. Monitor anything, anywhere, in real-time.

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Pin Code Access System lockAccess control
PIN Code Access System

Simple and reliable 4G access control solution for PIN code entry. Remote user management of gates, doors, barriers and shutters on secure sites.

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We're only a message away

Concerned about unexpected IoT costs? Learn how our transparent pricing and flexible plans keep your budget in check.

Frequently asked questions

  • An IoT SIM card is designed for machine-to-machine (M2M) and Internet of Things (IoT) applications. Unlike standard SIMs, IoT SIMs provide reliable, multi-network connectivity, remote management, and extended lifecycle support for critical devices deployed across different locations.

  • The IoT SIM can be installed in any compatible ControlFreq hardware, enabling reliable IoT and M2M communication for:

    • Remote Monitoring

      Fire risk detection, mains power monitoring, leak detection, thermal CCTV, and critical equipment status.

    • Critical Communications

      Lift emergency phones, help points, GSM intercom systems, and audio challenge solutions for secure environments.

    • Access Control

      On-demand parking systems, smart door access, ANPR (Automatic Number Plate Recognition), and smart locker management

    Each SIM is optimised for secure, always-on M2M connectivity, ensuring your IoT solutions work seamlessly in the field.

  • IoT SIMs are optimised for connected devices and M2M communication, offering:

    • Access to multiple mobile networks (for maximum coverage)

    • Advanced features like remote SIM provisioning (eUICC)

    • Global coverage with a single SIM

    • Longer lifespan and industrial-grade durability

  • Yes. Our SIM cards offer global IoT and M2M connectivity across 190+ countries and 600+ networks, ensuring your devices stay connected wherever they’re deployed.

  • The SIMs support all major cellular technologies for IoT and M2M applications, including:

    • 2G, 3G, 4G, and 5G

    • LTE-M and NB-IoT for low-power, wide-area connectivity

  • Yes. For advanced security and integration in IoT and M2M deployments, options include:

    • Static IP addressing

    • Private APNs

      These features are ideal for critical infrastructure and secure IoT solutions.