Dometic Holding Tank Monitor DTM


Dometic Holding Tank Monitor DTM


Eliminate the risk of overfilling your holing tank, and always know the status with the Dometic/SeaLand DTM04 monitor. This monitor measures four levels in the waste tank, with panels noting empty, low, mid, and full levels. A continuous light indicates that power is on, and a full-tank shutdown option prevents the risk of overflow. These panels can connect with a DTD Tank Discharge Control to offer convenient holding tank discharge options. The Dometic Holding Tank Monitor was formally known as the Sealand Tank Watch.  A trim bezel is available to convert from the old Tank watch (TW) to the new Dometic Tank Monitor (DTM)



  • Wall-mountable display panel features four-color LED indicator for easy monitoring
  • Optional relay to shut down electric toilets in the event of a full tank is available
  • Probe assembly options fit tanks up to 22 in. (55.9 cm) and 45 in. (114.3 cm) tall
  • 12 V DC or 24 V DC operation
  • Includes one set of tank probes

Dometic Tank Monitor Manual



Additional information

Weight N/A
Dimensions N/A

With Vent, Without Vent

Max Probe Depth

22", 45"