Digital IoT Modernisation for critical systems anywhere

ControlFreq is a digital upgrade technology partner delivering reliable, tailored solutions in remote monitoring, critical communications, and cloud control—powered by robust 4G-IoT hardware, multi-network IoT connectivity, and cloud-based location management for real time remote control and global visibility.

  • Heathrow Airport

ControlFreq is your IoT technology partner

We understand the challenges of upgrading outdated technology. Our IoT communications upgrade empowers existing systems for uninterrupted, zero-downtime operations. Gain global visibility, remote control, and real-time status of your remote assets and critical systems—anytime, anywhere.

Global M2M / IoT connectivity

Expore our universal solutions

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Remote Monitoring

Comprehensive monitoring systems for fire, intruder, mains power, water leak, and critical machinery faults.

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Critical Communications

Reliable voice communications for critical infrastructure such as emergency lift phones, help/info points and alarm systems.

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Access Control

Cloud-managed access control for car parks, commercial security gates, building doors and secure entrance points.

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IoT SIM Cards

Managed IoT connectivity in 190+ countries and 600+ networks ensuring fully redundant service, globally.

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  • Modernise lift emergency communication systems with compliant, future-ready technology

    Modernise emergency lift phone communication systems with the latest in 4G-VoLTE digital upgrade technology

    Ensure uninterrupted lift communications after the BT shutdown, without replacing existing lift phones, using digital PSTN upgrades including battery back up, realtime visibility & live system status online.

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  • Prepare for the PSTN shutdown with upgrade-ready digital alternatives to keep systems connected

    Prepare for the PSTN shutdown with digital retrofit alternatives to keep you connected without downtime

    Protect your critical infrastructure from disruption by switching to the latest 4G-VoLTE, cloud-connected digital IoT hardware to ensure continuity beyond the BT copper fixed-line switch-off.

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  • Reliable cloud-based fire alarm monitoring for faster response and reduced risk

    Upgrade outdated fire alarm panels with the latest in real-time 4G multi-network alarm signal communications

    Ensure the safety of people and property and maintain compliance with real-time alarm signal notifications on multiple channels like SMS, voice, email, ARC & WebAlarm™ Cloud for global visibility.

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Specialist hardware & upgrade solutions for critical applications

Our universally adaptable 4G-IoT hardware range enables remote monitoring, critical communications and access control in a wide range of industries and applications. Whether you’re upgrading from outdated technology or implementing a fresh system, we have you covered with fully supported end-to-end solutions.

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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  • Legacy Upgrade Specialists

    Digital upgrade specialists

    ControlFreq specialise in end-to-end digital upgrades, without replacing existing hardware, to navigate the challenge of modernising outdated technology.

  • The upgrade process

    The upgrade process

    Our process begins with an initial evaluation, followed by an introductory demo call, then either an instant solution or a detailed proposal. This leads into a managed pilot trial and, if successful, a phased rollout.

  • Get ready for tomorrow

    Get ready for tomorrow

    ControlFreq collaborates with you, your installers, or technology integrators to ensure a seamless transition from legacy systems to reliable, future-ready operations.

Let’s discuss your technology challenge

Please provide your contact details to connect with an IoT technlogy specialist for an initial consultation.

Frequently asked questions

  • Yes. We offer digital upgrades which replace legacy PSTN lines that allows you to leave existing lift phone equipment in place and simply upgrade the communication path from analogue to digital. We offer a managed service including an initial consultation, detailed proposal, pilot trial and measured results prior to a controlled phased rollout. Contact us to discuss your challenge.

  • Our fire monitoring systems consist of 4G-IoT alarm communicator hardware, thermal CCTV cameras and cloud-based software for real-time fire alarm signalling and monitoring—designed for remote visibility, visual verification and early warning notifications.

  • Yes. ControlFreq multi-network SIM cards connect to all major UK and global networks, providing seamless 2G, 4G, LTE-M, and NB-IoT connectivity for critical applications.

  • Yes, ControlFreq specialise in 4G-based cloud access control that enables efficient and remote user management for the secure control of gates, doors, shutters and barriers. ControlFreq are particularly well connected with car park access being fully integrated with the leaders of the online parking marketplace.

  • No. ControlFreq develops technology solutions and hardware for installation by trained 3rd party installers and integrators. While we offer direct support for all our systems, we channel installation enquiries through qualified installation partners we work with all over the UK. Get in touch.

  • Yes. We work with a trusted network of installation professionals across the UK and are happy to introduce you to a suitable partner based on your location and project. Contact us.

  • We provide a tracked support ticket system and premium 7-day phone support to installers and integrators for pre-sales advice, installation guidance, and remote diagnostics where needed. Our technical support is UK-based however under pre-agreed SLA’s we can offer a call service which is answered in the US outside of UK business hours.

  • Yes. Pilot trials are offered to prove functionality and suitability for the application before committing to a phased rollout. Get in touch to discuss your requirements.

  • Simply contact us with your project needs. Our team will advise on the best-fit solution and help you move forward—whether it’s specifying hardware, SIM cards, or arranging a pilot. Get in touch today to start modernising.