Harvia Xenio & Fenix Data-Cable Extension – 65 ft (20 m)

**Overview**
Harvia’s control units regulate sauna heaters by connecting a touch‑screen control panel to a power unit via a small data cable. Harvia’s Xenio and Fenix control panels are supplied with a 5 m data cable, which works well when the panel and power unit are close together. When the control panel needs to be mounted further away—inside a changing room, living area or beyond a wall—a longer, factory‑made extension is required. The Harvia WX319 cable is the longest extension offered by Harvia and measures 20 m (≈65 ft). It has male RJ‑10 plugs at both ends for plug‑and‑play connection and is compatible with Harvia Xenio and Fenix control units as well as older Harvia controllers such as Globe, Cilindro, Griffin and Xafir.

Harvia’s Xenio installation manual explains that the control panel connects to the power unit via a data cable and that only one control panel can be connected【517667406944121†L1494-L1501】. The same manual states that the maximum total cable length is 80 ft (25 m)【517667406944121†L1494-L1517】. Harvia lists three cable options in the spare‑parts table: a 5 m data cable (WX311), a 10 m extension (WX315) and a 20 m extension (WX319)【517667406944121†L1734-L1759】. The new Harvia Fenix control unit comes with a 5 m data cable and recommends extension cables as accessories【306632843556930†L78-L82】. The 65‑ft WX319 extension therefore provides the maximum length allowed for Xenio/Fenix installations while leaving 10 ft of margin when used with the 5 m factory cable.

Important installation note: Do not exceed the manufacturer’s maximum data‑cable length (80 ft/25 m)【517667406944121†L1494-L1517】. Using longer or non‑Harvia cables can cause communication errors or void your warranty. Always route the cable away from high‑voltage wiring, do not splice the cable, and have the installation performed by a qualified electrician.

**Description**
This genuine Harvia data‑cable extension allows you to mount your Xenio or Fenix sauna control panel up to 65 ft (20 m) from the power unit. It plugs into the RJ‑10 port on the control panel and the corresponding port on the power unit, extending the original 5 m cable. The cable is black and uses shielded four‑conductor wire to ensure reliable communication between the panel and the power unit. Since it is an original Harvia part, it preserves the safety and warranty of your control unit.

**Features**
• Authentic Harvia replacement part – spare data‑cable extension designed for Harvia Xenio, Fenix, Globe, Cilindro, Griffin and Xafir control systems【129714290451116†L24-L27】.
• Extra‑long reach – 20 m (≈65.6 ft) cable allows you to mount the control panel in another room or further along a wall while staying within the manufacturer’s 80 ft maximum【517667406944121†L1494-L1517】.
• Plug‑and‑play installation – male RJ‑10 connectors on both ends mate directly with the control panel and power unit; no splicing or special tools required.
• Durable construction – shielded four‑conductor cable with factory‑molded plugs maintains signal integrity and resists wear.
• Compatibility – works with Harvia Xenio CX30/CX45 power units (including Wi‑Fi models), Harvia Fenix control units and older controllers (Globe, Cilindro, Griffin, Xafir)【129714290451116†L24-L27】【306632843556930†L78-L82】.
• Non‑returnable safety part – as with other Harvia spare parts, this cable cannot be returned once opened【129714290451116†L27-L38】.

**Includes**
• (1) 65‑ft (20 m) data cable with RJ‑10 male connectors
• Instructions outlining the maximum permissible cable length and installation guidelines

**Specifications**
– Model: WX319 (extension)
– Length: 20 m (≈65.62 ft)
– Color: Black
– Connector type: RJ‑10 (4P4C) male plugs
– Weight: ≈0.7 lb (0.32 kg)
– Compatibility: Harvia Xenio CX30/CX45 control units (standard and Wi‑Fi), Harvia Fenix control units, and Harvia Globe, Cilindro, Griffin & Xafir controllers【129714290451116†L24-L27】【306632843556930†L78-L82】
– Maximum total cable length: 80 ft (25 m) allowed between control panel and power unit【517667406944121†L1494-L1517】

**Installation & Use**
1. Disconnect power to the sauna before replacing or extending the control‑panel cable.
2. Disconnect the existing data cable from the control panel and power unit.
3. Plug one end of the 65‑ft extension into the control‑panel port and the other end into the power unit. The original 5 m cable can be left off since this extension provides the full length.
4. Route the cable away from mains power wires and avoid sharp bends. Do not splice or cut the cable; splicing can cause communication errors.
5. Confirm that the total cable length does not exceed 80 ft (25 m)【517667406944121†L1494-L1517】. For Fenix installations the 65‑ft extension plus the included 5 m cable should not be used together.
6. Restore power and test the control panel. If any error messages appear, check that the connectors are fully seated and that the cable is not damaged.

**Why Choose the 65‑ft Extension?**
– Extra flexibility – Standard Harvia kits include a 5 m data cable. The 65‑ft WX319 extension lets you place your control panel almost anywhere without exceeding the manual’s maximum length【517667406944121†L1494-L1517】.
– Factory‑approved – Harvia lists the 5 m (WX311), 10 m (WX315) and 20 m (WX319) cables as approved spare parts【517667406944121†L1734-L1759】. This product is the longest available and is recommended for installations where the panel must be located remotely.
– Fenix ready – The Harvia Fenix control unit includes a 5 m control‑panel cable and explicitly recommends extension cables as accessories【306632843556930†L78-L82】. Our 65‑ft extension provides the maximum flexibility for these modern smart controllers.

**Related Products**
– Harvia 5‑m Data Cable (WX311) – included with most Xenio and Fenix packages; order a spare if yours is damaged.
– Harvia 10‑m Data‑Cable Extension (WX315) – a mid‑length option for installations requiring up to 30 ft of total cable.

**Disclaimer**
This item is a safety‑critical spare part for Harvia control units. In accordance with Harvia’s return policy, replacement parts are not returnable【129714290451116†L27-L38】. Installations must follow local electrical codes and the instructions provided in the Harvia Xenio and Fenix manuals.