Finnleo External On - Off Switch (SL2-C Laava & Magma)

Finnleo External On/Off Switch (SL2-C Control – Laava & Magma)

The Finnleo External On/Off Switch (model 1601-36) is a low-voltage, illuminated momentary switch designed to work alongside the SaunaLogic2 SL2-C control for Laava and Magma heater installations. It gives bathers a simple, single-purpose way to start or stop the sauna directly from the room itself, while the SL2-C control panel — which handles temperature, timing, and heater programming — is mounted in a separate location such as a mechanical closet, hallway, or back-of-house utility area that isn’t accessible to guests. This is a common configuration in spas, fitness clubs, hotels, and multi-user residential saunas where operators want to keep the full control interface secured while still allowing bathers to power the heater on or off at will.

Function and Purpose

The External On/Off Switch is intentionally minimal by design. It does not duplicate the SL2-C’s temperature adjustment, timer, or lighting functions — it performs one job, and performs it reliably: toggling the sauna heater on or off. The switch is illuminated so bathers can easily locate and confirm its status even in low ambient light, a detail that matters in commercial changing areas or dimly lit sauna anterooms. Because it operates on low voltage, it can be positioned at the sauna entrance or interior wall without introducing high-voltage wiring into guest-accessible space, keeping the installation compliant with electrical safety codes while still being fully responsive to touch.

Heater and Control Compatibility

This switch is purpose-built for the SL2-C control platform paired with Finnleo’s Laava and Magma heater lines, including multi-heater Magma configurations used in larger commercial sauna rooms. It integrates directly into the SL2-C wiring scheme as a supplemental low-voltage input, requiring no separate transformer or additional control logic. Facilities running dual Laava Pro heaters or multi-unit Magma installations on a single SL2-C control benefit from the same single-switch simplicity, since the External On/Off Switch communicates directly with the primary control rather than with each heater individually.

Construction and Installation

Built for durability in humid, high-traffic sauna environments, the switch housing is designed to withstand repeated use and the moisture-heavy conditions typical of commercial bathing facilities. Installation is straightforward: the switch wires back to the SL2-C control using standard low-voltage cabling, and its compact footprint allows it to be mounted flush near the sauna door or on an adjacent wall without disrupting the room’s design. Because no line-voltage wiring is required at the switch location, installation is faster and safer for electricians working in wet-area environments.

Why It Matters

For commercial operators and multi-user residential installs, separating bather-facing controls from administrative controls solves a real operational problem: guests need a way to start their session, but they shouldn’t have access to programming settings intended for facility staff. The External On/Off Switch closes that gap cleanly, letting operators lock down the SL2-C control panel in a secure location while still delivering an intuitive, foolproof way for bathers to power the sauna. It’s a small component, but one that directly shapes the day-to-day usability and security of a professionally managed sauna installation.

Why Choose Finnleo

Finnleo has spent decades engineering Finnish-inspired sauna systems that hold up to real-world commercial and residential demands, and every accessory in the SaunaLogic2 ecosystem — down to a single-function switch like this one — is built to the same standard of reliability. Choosing genuine Finnleo components ensures seamless compatibility with your SL2-C control and Laava or Magma heaters, backed by manufacturer support and a design philosophy that prioritizes safety, simplicity, and long-term durability in every detail of the sauna experience.