Sauna temperature controller model Do 135T3 for 3 to 27 kW sauna water heaters, compatible with SAB, SAD and HV series. Compact wallmounted control panel with a separate control box designed for straightforward installation and reliable operation. Key benefits Precise temperature control: set temperatures from 35 to 110 degrees Celsius to match your desired sauna conditions. Flexible scheduling: working time adjustable from 1 to 12 hours for predictable sessions and energy management. Centralized control of main functions: switch the sauna water heater on and off and operate lighting from a single panel for convenient, practical use. Spacesaving installation: compact wallmounted design with a separate control box reduces clutter and preserves sauna space. Durable construction: ABS casing provides toughness, wear resistance and long service life. Main features Model: Do 135T3 Compatibility: sauna water heaters with external control, wet steam machines and steam generators; suitable for SAB, SAD and HV series with power from 3 to 27 kW Temperature range: 35 to 110 degrees Celsius Working time: 1 to 12 hours Installation: wall mounting Material: ABS housing Weight: approximately 370 to 403 g Functions: heater on/off control, light control, and other basic sauna controls via the separate control box Use scenarios Home sauna: set the controller to preheat the sauna for a scheduled evening session, then use the panel to adjust temperature and lights without entering the steam room. Small commercial spa: manage multiple daily sessions with the 1 to 12 hour timer and consistent temperature range to ensure repeatable results for guests. Wellness room retrofit: install the compact wallmounted controller to add external control to existing SAB, SAD or HV series sauna water heaters for improved usability and space efficiency. What you get 1 controller (model Do 135T3), ready for wall mounting and connection to compatible sauna water heaters This controller provides straightforward temperature and time control, durable ABS construction and a compact mounting solution for compatible sauna water heaters.