Built in the UK, for the systems that keep Britain secure.
LynixSIM exists to solve a single problem brilliantly — reliable mobile connectivity for the gates, intercoms and access systems that protect homes and businesses across the UK.
Born from a frustration our customers know all too well.
LynixSIM was founded on a simple observation: gate and intercom owners were being failed by SIM cards that were never designed for them. Generic IoT SIMs dropped calls, bounced between weak networks, and left systems unreachable at the moments they mattered most.
Our founding team, with decades of combined experience in telecommunications and security systems, set out to engineer something purpose-built. We tested with over 50 different intercom and gate systems from every major manufacturer to ensure true universal compatibility.
Today, LynixSIM is trusted by thousands of homeowners and hundreds of professional installers across the UK — the connectivity standard for security-critical access systems.
Intelligent network locking. Engineered by Lynix.
These are not standard multi-network IoT SIMs. Our proprietary AI model actively searches, tests and locks onto the strongest available signal at your exact location — and stays there. No restless switching. No dropped calls. Just continuous connectivity.
Intelligent Network Selection
Our AI continuously evaluates signal quality across all major UK networks, momentarily testing each carrier to identify the strongest connection at your precise location.
Locked for Continuity
Once the best network is found, the SIM locks on. No unnecessary handovers, no flapping between carriers — a stable, predictable connection your system can rely on.
Failover, Only When Needed
Switching is reserved for genuine failover events — tower outages or complete signal loss — keeping your intercom reachable through the situations that matter most.
Built for Gates & Intercoms
Tuned end-to-end for security-critical access systems. The reliability and responsiveness installers demand, and homeowners depend on.
Four principles. Every SIM. Every customer.
Reliability
Your gate security should never fail. We engineer for 24/7 connectivity you can count on.
Specialisation
We focus exclusively on gate and intercom systems — it's all we do, and we do it better than anyone.
Support
Real UK engineers who understand gate systems, ready to help when you need it most.
Quality
Every SIM is tested and quality-assured in the UK before it ever reaches your hands.
Built for the UK. Shipped from the UK.
Every part of our operation runs from the UK — from the engineers on our support line to the warehouse that ships your order. No offshore call centres. No international delays. Just a focused British team that knows gate systems inside out.
UK Based
Headquartered in the UK with a dedicated team of gate and intercom engineers on hand for customer support.
UK Mobile Numbers
Every SIM ships with its own dedicated UK mobile number for reliable local connectivity.
Same-Day Dispatch
Order before 3pm and we dispatch first class the very same day from our UK warehouse.
20,000 SIMs in Stock
Always 20,000 SIMs ready to ship — from a single card to bulk orders for major projects.
The legal bits
- Company Name
- Lynix Group Ltd
- Company Number
- 16624304
- Registered in
- England and Wales
- Contact
- support@lynixgroup.co.uk
- Support Hours
- Monday to Friday, 9am – 5pm UK