Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Includes

What Is Included

All configurations

Included with purchase

Spare control cable extension for harvia models globe, clinindro, griffin, xenio and xafir.

Contents vary by configuration. Check the row for the option selected above.

How It Fits

How This Product Fits the System

What it is used for

An external sauna-heater control component. Use it only with the heater family, voltage, phase, load, sensors, power unit, and cable arrangement named for the exact model.

What to plan

  • Match heater family, voltage, phase, maximum load, power unit, sensors, and control generation as one system.
  • Confirm whether the selected package includes the display, main module, sensors, cables, and any required extension box.
  • Sensor placement, door interlock, remote-start rules, and cable routing must follow the current control manual.

Designed to work with

Model-specific replacements and compatible system components.

Gallery

Harvia Xenio & Fenix Data-Cable Extension – 65 ft WX319

Relocate your Harvia Xenio or Fenix control panel up to 65 ft with this plug‑and‑play RJ‑10 extension cable. Genuine Harvia quality ensures reliable connections.

$144.00

US shipping: $22.95. This item ships free when you add it to a sauna or heater order, or when your order is $200 or more. Sauna and heater customers get free shipping on accessories for life; we’ll recognize your email at checkout.

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Extend Your Control Panel, Expand Your Sauna Experience

The Harvia Xenio & Fenix Data‑Cable Extension lets you relocate your digital control panel up to 65 ft from the sauna power unit. This is perfect when you’d rather adjust sauna settings from a comfortable dry space like a changing room or living area instead of inside the hot sauna.

Why extend your cable?

– Safer and more convenient: keep the control panel cool and dry and avoid bending over or reaching awkwardly to adjust the temperature.
– Custom installation: ideal for larger rooms or when the power unit sits behind a wall or in a mechanical closet.
– Plug-and-play reliability: genuine Harvia RJ 10 connectors on both ends mean no cutting or crimping and ensure a secure signal.

Key features

– Factory made 65 ft data-cable extension.
– Compatible with both Harvia Xenio and Fenix control units.
– Durable shielded cable with RJ 10 connectors on both ends (Replaces factory included cable).
– Flexible and durable cable jacket; manufactured by Harvia in Finland.

Specifications

Length: 65 ft
Connectors: RJ 10 male to male (4P4C)
Compatibility: Harvia Xenio & Fenix control units
SKU: WX319 65FT

<nstallation

1. Turn off power to your sauna.
2. Remove the existing data cable from your control panel and power unit.
3. Route the cable along walls or through conduit as needed. Avoid running near high voltage wires to reduce interference.
4. Connect one end of the extension cable to the control panel and the other end to the power unit.
5. Restore power and verify that the control panel communicates with the sauna heater.

This cable is a safety component and cannot be returned once installed. Do not exceed the total control cable length specified above.

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Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Includes

What Is Included

All configurations

Included with purchase

Spare control cable extension for harvia models globe, clinindro, griffin, xenio and xafir.

Contents vary by configuration. Check the row for the option selected above.

How It Fits

How This Product Fits the System

What it is used for

An external sauna-heater control component. Use it only with the heater family, voltage, phase, load, sensors, power unit, and cable arrangement named for the exact model.

What to plan

  • Match heater family, voltage, phase, maximum load, power unit, sensors, and control generation as one system.
  • Confirm whether the selected package includes the display, main module, sensors, cables, and any required extension box.
  • Sensor placement, door interlock, remote-start rules, and cable routing must follow the current control manual.

Designed to work with

Model-specific replacements and compatible system components.

Gallery