Wireless Underwater Technology — Switzerland
Cut the Cord.
Wireless Underwater.
We are proud to distribute Hydromea — the Swiss pioneer of wireless subsea technology. From the EXRAY ultra-compact inspection ROV to the LUMA optical modems that stream 10 Mbps through seawater, Hydromea removes the tether and the bandwidth ceiling from underwater operations.
Two Technologies. One Wireless System.
A compact inspection ROV and the optical modems that set it free — used independently, or combined into a fully untethered underwater inspection platform.
EXRAY — Compact Inspection ROV
At 9 kg and 13.4 cm wide, EXRAY reaches confined spaces no conventional ROV can enter — tanks, penstocks, ballast voids. Six degrees of freedom, 6–8 h endurance, FHD video with 4K stills, modular sensor payloads, and optional tether-free operation via LUMA.
Explore EXRAY →
LUMA — Optical Wireless Modems
The world's most capable underwater optical communication system. Three models from low-power sensor links to 10 Mbps HD video at 50 m, on a 470 nm blue-light LED with a forgiving 120° beam — and 1,500× the energy efficiency of acoustic modems.
Explore LUMA →Swiss Engineering.
Wireless by Design.
Spun out of EPFL in Lausanne, Hydromea builds the subsea technology that lets vehicles and sensors work without cables — precise, portable and built to last.
Optical Wireless Pioneers
LUMA delivers Wi-Fi-class data through seawater — up to 10 Mbps where acoustic modems manage only kilobits. Hydromea leads the SWiG interoperability standard.
Ultra-Compact & Portable
EXRAY is 9 kg and 13.4 cm wide — carried and deployed by one person, into spaces that rule out every conventional inspection ROV.
Engineered for Endurance
6–8 hour ROV dives and sub-10 mW sleep power on LUMA sensor nodes — built for long, untethered, battery-powered operations.
Class-Approved & Swiss Made
EXRAY is DNV class approved and the hardware is Swiss-engineered and built — ready for regulated maritime, energy and defence work.
The Untethered Inspection System
Combine the two and the tether disappears entirely. EXRAY streams live FHD video over LUMA X while the pilot works from a cable-free station — no drag, no entanglement, no deployment limits in confined structures. The NAVIA™ interface is unchanged; the cable is simply gone.
- LUMA X optical modem integrated directly into EXRAY
- Live FHD video and full 6-DOF control over a 50 m wireless link
- NAVIA™ sensor data transmitted alongside the video feed
- Eliminates tether snag in tanks, penstocks and confined voids
Wherever Cables Get in the Way
From confined-space inspection to wireless subsea sensor networks, Hydromea technology opens up operations that tethers and acoustic links cannot support.
Confined-Space Inspection
Tanks, pipes, penstocks and ballast voids — EXRAY enters where conventional ROVs and divers cannot, with full 4K documentation.
Hydropower & Energy
Dam walls, intake channels, turbine wells and penstock interiors surveyed without dewatering or confined-space diver entry.
AUV Wireless Comms
LUMA replaces or supplements AUV tethers — real-time command, control and data offload at up to 10 Mbps over 50 m, with docking-station links.
Subsea Sensor Networks
Low-power LUMA 100 nodes form wireless mesh or star networks for environmental, structural and oceanographic data — no cable infrastructure.
Oil & Gas
Ballast tank interiors, riser annuli and seabed sensor links — combining confined-space inspection with wireless asset monitoring.
Defence & Naval
Hull inspection, harbour security and covert high-bandwidth links — with no acoustic signature and no tether to manage.
Aquaculture
Net condition assessment, mooring inspection and fish-health monitoring with a compact footprint that minimises disturbance.
Deep-Sea Observatories
LUMA X's 12,000 m rating and ultra-low sleep power suit deep-ocean observatories offloading data to passing AUVs on demand.
Local Expertise.
Swiss Technology.
As an authorized Hydromea distributor, SepcoTech provides local sales support, technical guidance, demonstration units, and direct access to Hydromea's Swiss engineering team — for both the EXRAY ROV and the LUMA optical modem range.
- Authorized Hydromea distributor
- Demo unit availability for on-site trials
- DKK and EUR pricing — no hidden import costs
- Technical pre-sales support from trained specialists
- Integration support for EXRAY payloads and LUMA system design
- Combined EXRAY + LUMA untethered-system configuration advice
Request a Quote
Tell us about your project and we will prepare a tailored quote or answer any technical questions about Hydromea EXRAY and LUMA.
Send Us a Message
Fill in the form below and our team will respond within one business day.