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Dometic
Dometic DTM01 Holding Tank Monitor - 9108688891
Item: #864946 | Part Number: 9108688891$179.99
Description
- Single-level monitor signals when holding tank is nearly full
- Adjustable float switch installs on most rigid tank materials
- Activates "Full Tank" light to help prevent overflows
- 12/24V DC operation with low current draw for efficient performance
Dometic DTM01 Holding Tank Monitor - 9108688891 Item # 864946
Description
Dometic DTM01 Holding Tank Monitor.
Features:
- Single-level tank monitor system indicates when waste holding tank is almost full
- As level of holding tank contents rises, float switch inside tank is pushed upward and activates "Full Tank" light on indicator panel
- When "Full Tank" light is activated, the operation of any plumbing fixture connected to the holding tank should stop until tank is emptied
- Level probe assembly is adjustable to desired level indication height and installs on virtually any rigid tank material
Specifications:
- Nominal Voltage: 12/24V DC
- Current Draw: 16 mA @ 12V DC (requires 0.5A fuse)
- Cutout: 1" Dia
- Dimensions (monitor panel): 3 1/4" x 2"
- Connection:
- Panel: 12" wire pigtail
- Probe: 24" wire pigtail
Note: Probe to panel connection requires additional 18AWG stranded cable (sold separately).
Part Numbers for Dometic DTM01 Holding Tank Monitor - 9108688891
Reviews
Questions
If port holding tank indicator light is showing red, and the starboard tank indicator is showing no level whatsoever and we had a pump out one week ago and no solids have been placed in the holding tank and just a bit of liquid. Do you have any idea?
Most likely the sensor is stuck at the top of the shaft on the unit that is indicating "full." This is fairly common as debris sticks to the shaft and sensor. Pull the unit out and clean it. I wouldn't lubricate it as that would encourage stuff to stick to it.
Date published: 2026-04-12