Mission Critical Communications
 
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 Who We Are…

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Empowering Critical Communications Across Ireland, The UK & Europe

Founded in 1991, Sigma Wireless Communications is a trusted leader in mission-critical communications solutions, proudly headquartered in Dublin with an additional office in Cork. For over three decades, we have supported essential services and enterprise operations across Ireland and beyond—designing, delivering, and maintaining communication systems that meet the highest standards of safety, resilience, and reliability.

Today, we are part of something even bigger……..

In 2025, Sigma Wireless joined forces with Day Wireless Systems (DWS)—a leading US-based critical communications provider with over 55 years of innovation and service excellence. This strategic merger combines our local knowledge and European expertise with DWS’s deep resources and global reach, enabling us to deliver even more powerful, scalable, and future-ready solutions to our clients across Ireland, the UK, and Europe.

Operating now as Sigma Wireless Communications – a Day Wireless Systems company, together, we are united by a shared commitment: providing intelligent, dependable communications that serve public safety, transportation, defence, utilities, aviation, healthcare, maritime and enterprise sectors.

What we do….

Sigma Wireless provides bespoke, end-to-end communications and wireless network solutions. Our services cover:

  • System Integration: Full turnkey solutions—from consultancy and design to installation, commissioning, and long-term support.

  • Mission-Critical Networks: Private LTE (pLTE), TETRA, DMR, broadband wireless, and hybrid systems tailored to complex operational environments.

  • Resilience & Support: 24/7/365 engineering services across Ireland and remote support for international clients in over 20 countries.

Strategic Partnerships: We are proud to partner with technology leaders such as Motorola Solutions, Nokia, Frequentis, Rohde & Schwarz, Druid Software, IBM, MEP and Jotron, delivering proven solutions backed by global innovation.

Backed by Global Strength, Driven by Local Excellence

As part of the Day Wireless Systems family, Sigma Wireless now benefits from the scale and support of one of the largest communications integrators in North America. DWS brings a legacy dating back over a century and has built a reputation as the largest Motorola dealer in the western United States. Their team of over 400 professionals operates 28 service centres across five states, offering unmatched engineering depth and technical insight.

This partnership enables Sigma Wireless to:

  • Expand its capabilities in advanced technologies, including Private 5G/ LTE, Air Traffic Management, Maritime, Broadband wireless and Secure data networks

  • Offer greater purchasing power and competitive pricing across equipment and services

  • Accelerate innovation and service delivery for our European customers

Why Choose Sigma Wireless?

  • Proven Performance: Trusted for over 30 years by emergency services, government agencies, multinational enterprises, and critical infrastructure providers

  • International Certified Standards: ISO 9001, ISO 14001, and ISO 27001 certified—ensuring consistent quality, environmental responsibility, and information security.

  • Customer Focused: Our team is embedded across Ireland, with engineering resources always close at hand and committed to your success.

  • Future-Ready: From emerging technologies like Private LTE to hybrid communications strategies, we’re helping clients transition to tomorrow’s standards—securely and confidently

A New ChapTer

Our merger with Day Wireless Systems represents more than growth—it is an evolution. Together, we are building the future of critical communications with integrity, innovation, and an unwavering focus on customer success. Sigma Wireless is your partner for mission-critical communication solutions.


Let’s build the future of communication together—from Ireland and beyond.