TMT Survey Junction Box

TMT Survey Junction Box

ROV Components
The TMT Survey Junction Box (SJB) provides an easily accessible means of adding extra ROV tools to be fitted to the spare data channels from the ROV.
The SJB is a lightweight aluminium enclosure, oil-filled and pressure compensated. The pressure compensator maintains a pressure of approximately 5psi (0.34bar) above ambient sea pressure within the SJB.
The following are examples of possible connections:
  • Two (2) SSBL Responder outputs (trigger impulse)
  • One (1) Beacon output to activate the location beacon
  • Two (2) RS485 Serial Ports
  • Two (2) RS232 Serial Ports
  • Eight (8) 24VDC / 20W outputs
The SJB also contains a wet sensor. The Survey Junction Box is easy to fill or empty, through quick connect/disconnect fittings.
A pressure relief valve is fitted preventing over-pressure.
TMT can customise the tool to suit your requirements.


  • Clear lid to allow visual inspections
  • Robust construction
  • Corrosion resistant materials
  • Pressure relief valve
  • Field proven


Dimensions 438L x335H x163Wmm
Weight in Air 9.6kg
Weight in Seawater 7.8kg
Pressure Rating 5psi (0.34bar)
Depth Rating Unlimited