Digital sauna temperature controller panel with separate control box, model Do 135T3. Designed for external control of SAB, SAD, HV series 327KW sauna water heaters, this compact wallmounted controller offers reliable temperature and timer management in a durable ABS housing. Key benefits Precise temperature and time control: set temperature between 35110 C and operating time from 1 to 12 hours to match different sauna sessions and usage patterns. Simple centralized control: switch the sauna water heater on and off, control lighting, and manage sessions from a single panel for convenient operation. Spacesaving installation: compact wallmounted design keeps the control box out of the way and reduces installation footprint. Durable construction: ABS enclosure provides toughness and wear resistance for extended service life. Broad compatibility: built for use with SAB, SAD, HV series sauna water heaters in the 327KW range. How it solves common problems Eliminates manual monitoring by maintaining a userset temperature for the duration of the session. Consolidates heater and light controls into one unit, reducing the need for multiple switches. Compact wall mounting makes it easy to retrofit existing sauna rooms without occupying floor or bench space. Robust ABS housing resists impact and wear in humidity environments. Main specifications Model: Do 135T3 (suitable for 327KW sauna water heaters) Applicable equipment: external control sauna furnace, wet steam engine, steam generator Working time: 112 hours Temperature control range: 35110 C Material: ABS housing Installation: wall mount Weight: Approx. 370403 g Package contents: 1 x Controller Typical use scenarios Home sauna: Install the controller on the wall outside a residential sauna to set session length and maintain a steady target temperature while controlling interior lighting. Small commercial spa or gym: Centralize control for a steam generator or sauna furnace in changing rooms, allowing staff to schedule operating times and manage lighting from one panel. Retrofit for existing steam generator: or add an external controller to an existing wet steam engine to gain reliable timing and temperature setpoints without modifying the heater. This controller is a practical, durable solution for managing sauna temperature, run time, and basic lighting functions with straightforward installation and wide heater compatibility.