Temperature Sensor Cruisair Dometic RJ11 TSEP

This listing covers a Dometic temperature sensor with a modular RJ11 (4-pin) connector, offered in multiple cable lengths under the TSEP naming convention. If you’re sourcing dometic marine air conditioner parts or cruisair marine ac parts, use the variation selector to match the TSEP length to your installation layout and confirm the connector type on your existing sensor/control.

Quick fitment (choose the right option)

Before selecting a variation, confirm these three items:

• Connector type: This is an RJ11 / 4-pin style connection. Verify your current sensor plug matches RJ11.

• Application match: Use only where your marine A/C control setup specifies an RJ11 temperature sensor (often referenced as a TSEP temperature sensor in parts lists).

• Cable length: Choose the closest length that reaches without strain (avoid tight routing or stretching).

Tip: If your existing sensor or documentation references TSEP codes (e.g., TSEP10, TSEP15), select the same code/length and cross-check the part reference.

How to select the right temperature sensor length (reduce returns)

Because the sensor type is defined mainly by the connector + cable length, selection is usually straightforward:

1. Measure your cable route (not the straight line)
   Follow the actual path from the control/sensor port to the sensor location. Add slack for service loops and safe routing.

2. Pick the nearest TSEP length above your measurement
   A slightly longer cable is often safer than a cable that is too short.

3. Confirm the RJ11 (4-pin) plug on your current part
   This avoids ordering the right length with the wrong connector type.

4. Cross-check part references if you have them
   If your current sensor label or invoice includes a part number, use the cross-reference section below to reduce mismatch risk.

What’s included (by option)

Contents depend on the selected variation, but the core configuration is:

• Temperature sensor with RJ11 (4-pin) connector

• Cable length corresponding to the selected TSEP option (e.g., 5–80 ft)

To stay precise: any additional items beyond the sensor/cable should be confirmed on the specific variation details and/or packaging of the selected part reference.

Common symptoms you may be replacing a temperature sensor

A marine A/C temperature sensor issue often shows up as unstable temperature feedback to the control. Examples include:

• Inconsistent temperature readings or unexpected changes

• Short cycling (system starts/stops more frequently than expected)

• Poor setpoint control (overshooting or not maintaining target temperature)

• Intermittent behavior that improves when the connector is reseated (possible connection/cable issue)

Note: these symptoms can also be caused by wiring, control configuration, placement, or other components—verify the connector and sensor condition before replacing parts.

Compatibility & cross-reference (verify before ordering)

This is an RJ11 temperature sensor format commonly referenced in parts lists for certain Cruisair / Marine Air / Dometic marine A/C control setups that specify TSEP sensor cables. Because marine A/C systems vary by controller and generation, treat compatibility as verification-based:

Verify compatibility using at least one of the following:

• Your current sensor uses an RJ11 (4-pin) plug

• Your documentation/parts list references TSEP sensor codes

• Your existing part number matches a reference listed below

Cross-reference (as listed in the product variations):

Important: If your system documentation requires a specific part number, prioritize that match over length-only selection. For ambiguous references (or where the number is not shown), confirm using your existing sensor label or manufacturer documentation.