LUMA 250LP optical communication node

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LUMA 250LP low-power optical communication node is perfect for subsea data download, wireless interfacing between ROV and battery-powered deep-sea infrastructure.

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LUMA 250LP optical communication node

The Hydromea LUMA 250LP optical communication node combines outstanding performance and energy efficiency in a very compact form factor. Optical communication offers superior data rates, low latency and lower power requirements compared to acoustic modems. This makes it the perfect choice for applications such as data download from submerged sensor platforms (landers), as well as wireless interfacing between ROVs/AUVs and deep-sea infrastructure.

The LUMA 250LP is very energy efficient, which makes it ideal for battery-powered applications. It can be configured to enter a sleep mode after a specified time of inactivity, and optically woken up from sleep by another optical communication node when the link is re-established.

The software-configurable serial cable interface can be set to RS232 or RS485, which makes the LUMA 250LP the ideal drop-in replacement for cabled connections in many existing systems.


Ultra-compact and low weight

Ultra-low power sleep mode with optical wake-up with less than 10mW

Four transmission power levels:
2 – 5 W

Wide supply voltage range

Encryption of data link, ad-hoc networking (optical, on request)


Data download from submerged sensor platforms (landers)

Wireless interfacing between ROVs/AUVs and deep sea infrastructure

Continuous monitoring

Construction data relay

Water to air connectivity without cables (splash zones)

Weight 250 kg
Dimensions 100 × 50 × 30 cm
Supply voltage:

12 – 36 V


RS232 / RS485

Depth rating:

6000 m (on request)


SubConn MCIL6M (or as requested)

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