We’re passionate developers focused on clean design, accessibility, and performance.
UPAS Ltd (Ultraconnect Perimeter Access Surveillance Limited) is the developer of the UltraConnect Engine, an open-source, modular access-control controller designed for flexibility and connectivity. It supports standalone or networked operation, with a chassis for chaining up to seven “carriage” expansion modules—such as relays, audio/video switches, and analogue I/O—making it ideal for applications ranging from door entry to video/audio routing upasltd.co.uk
The company offers software and firmware downloads—with plans for a “Lite” version—while providing a suite of step-by-step guides and video tutorials to help installers, developers, and hobbyists get started . Additional resources include a DIY community initiative, featuring open-source designs like a manual SMD pick-and-place carousel with downloadable GCode files upasltd.co.uk.
UPAS maintains an online shop offering core hardware: standalone and networked UltraConnect Engines, communication modules (Wi‑Fi, Ethernet, GSM), and displays (OLED or HD44780 LCD)
Their project roadmap highlights completed features—like Wi-Fi modules and scripting languages—and upcoming additions including GSM integration, TCP packet handling, N‑Plate Recognition via Raspberry Pi, documentation updates, and tutorials.
Based in Shropshire, UK, and registered in England (company no. 11902853)
Their focus on open-source hardware, modular design, and community-driven innovation positions UPAS as a flexible, scalable solution provider for access control, automation, and related embedded systems.
UPAS Ltd (Ultraconnect Perimeter Access Surveillance Limited) is a UK-based technology company specializing in open-source modular access control systems. Our flagship product, the UltraConnect Engine, is a flexible, standalone or networked controller platform for video/audio routing, door entry, and automation.
Our mission is to make advanced access control systems more accessible, customizable, and transparent through open hardware and open-source software. We believe in innovation, community collaboration, and modular design for scalable security solutions.
Founded in 2019 and based in Shropshire, UPAS Ltd has grown through a community-first approach, offering affordable, flexible systems to developers, installers, and hobbyists. We've released open-source hardware modules, software stacks, and are building an ecosystem around our controller platform.
Our solutions are used by integrators, installers, developers, and DIY enthusiasts in need of low-cost, highly configurable access control systems. Whether you're prototyping a smart door system or upgrading a multi-point entry network, our tools scale to meet your needs.
We support an open DIY community offering downloadable projects, 3D printing files, firmware, and tutorials. Feedback, feature requests, and pull requests are welcome as we evolve together with our users.
Ready to explore the UltraConnect ecosystem?