Cabin

The unispa cabin firmware is tailored to efficiently control heating and auxiliary functions (e.g., recirculation, aroma dosing, ventilation, sprinklers, and others) for following spa cabin configurations:

• Steam cabin (steam sauna, steam shower, hammam),
• Biosauna, and
• Hot sauna (Finnish sauna, dry sauna)
• Herbal inhalation

Peripheral & Process description

Below are the options and function descriptions of the Cabin module:

unispa Interface	Process	Related Vars	Peripheral	Description	Relevance
	SYS-ON	timefrom1, timeto1, timefrom2, timeto2, timefrom3, timeto3, timefrom4, timeto4, timefrom5, timeto5, timefrom6, timeto6, timefrom7, timeto7	RE10	The module is active (SYS-ON) when the main state is set to Auto and the current time falls within the preset intervals for each day of the week, or when the main state is set to On. The module's active state directly impacts other functions and is reflected in the dedicated relay used to control complementary modules (e.g., RGB driver, motor, etc.).	All
	Primary heater 3xL + Analog 0-10V	templow temphigh heaton heatoff heatpower	RE1 RE3 RE8 + D6 (PWM)	Switches individual phase lines of the electric stove/steam generator (and simultaneously outputs an analog signal) based on the primary temperature reading T1NTC up to temphigh. If the reading exceeds temphigh +7°C or becomes invalid, the module switches to error mode. Below templow: heating at 100% power. Up to temphigh: heating with preset power and intervals. Up to temphigh: no heating. Above temphigh: Error, all operations STOP. DSM: As long as the DSM signal is HIGH, the heating power of the phase lines is limited by the %DSM parameter. Output power (both standard mode and DSM power) is expressed in percentage. This percentage corresponds to the phase lines as follows: 0-29% = no line, 30-59% = 1 line, 60-89% = 2 lines, 90-100% = 3 lines. Switching L1, L2, and L3 On or Off is always performed gradually with a 1-second delay between each line.
	Main state switch	masterstate	I1	Switches between main states Off, On, and Auto using a physical switch attached to the module or via a network command. The last change takes priority over the current physical switch position and persists after reboot.
	Primary thermo- meter	-	I2 (T1NTC)	Main thermometer used to regulate the ambient temperature in the cabin. Readings are published via MQTT regularly.
	Secondary thermo- meter		I4 (T2NTC)	Secondary thermometer used for informational purposes only. Readings are published via MQTT regularly.
	DSM signal	dsmpower	I3 (DSM)	The closed state limits power output according to the preset %DSM and closes the ventilation valve. It also releases the temperature requirement for aroma dosing, sprinkler, and recirculation.
	Alarm button	-	I6	The physical alarm button placed in the cabin. Its closed state initiates the alarm.
	Alarm clear		I7	The physical clear button placed in maintenance. Its closed state ends the alarm. The alarm can also be cleared via Wi-Fi.
	System button		I8	Short press [0.1-1s] (dimmed display) - lights up the display. Short press [0.1-1s] (bright display) - cycles between the Wi-Fi modes: STA -> Off -> AP -> STA. Middle press [1-9s] - reboots the device. Long press [10+s] - reverts to factory defaults (irreversible).
	Air Recircula- tion	recircon recircoff	RE2	As long as the module is active (SYS-ON) and the target temperature is within the range (between templow and temphigh+7), recirculation operates at preset intervals. In case of active DSM signal, the recirculation proceeds even below templow.
	Stone sprinkler	sprinkleon sprinkleoff	RE4	As long as the module is active (SYS-ON) and the target temperature is within the range (between templow and temphigh+7), the sprinkler runs at preset intervals. In case of active DSM signal, the sprinkling proceeds even below templow.	Hot sauna
	Auxiliary steam generator	humlow humhigh	RE4	As long as the module is active (SYS-ON), an auxiliary steam generator (RE4) maintains the ambient air's relative humidity in the preset range (between humlow and humhigh).	Biosauna
	Aroma doser	aromaopt* aromaon aromaoff	RE4	As long as the module is active (SYS-ON) and the target temperature is within the range (between templow and temphigh+7), dosing is performed at preset intervals. In case of active DSM signal, the dosing proceeds even below templow, but only if the %DSM > 30%. *The herbal inhalation function offers a selection of aromas: A, B, or C. When set to Auto, the system cycles between aromas A, B, and C automatically based on the day of the year, beginning on January 1st with aroma B.	Herbal inhalation, Steam bath
			RE6 RE11		Herbal inhalation
	Air Vent	venton ventoff	RE5	As long as the module is active (SYS-ON) and the target temperature is within the range (between templow and temphigh+7), the ventilation valve opens and closes at preset intervals. When the temperature is below templow or the DSM signal is active, the valves remain closed (Relay is ON!). During the Error state, the valves are open (Relay OFF!) for the entire duration of the state.	All
	Main light	-	RE7 RE12	On when the module is active (SYS-ON). The on-board MOSFET on RE12 can power up to 20W. Use the appropriate LED amplifier to control more powerful lights or strips.	All
	Auxiliary light FX1		RE6	On when at least one phase line is heating.	Biosauna, Steam bath, Hot sauna
	Auxiliary light FX2		RE11	On when the module is active (SYS-ON) and the target temperature is within the range (between templow and temphigh+7). The on-board MOSFET on RE11 can power up to 20W. Use the appropriate LED amplifier to control more powerful lights or strips.
	Alarm		RE9	After closing the I6 input, the relay flashes repeatedly until the alarm is cleared via I7 or a network command.	All
	Audio channel	audiovol audioeq audiorand audiodir[1-16]	D0 D3	Plays sounds or music when the module is active (SYS-ON).
	DHT22	-	D4	Measures ambient temperature and relative humidity. It should be placed in an area where the temperature does not exceed 80°C. Readings are published via MQTT regularly.	Biosauna, Hot sauna, Herbal inhalation
	Auxiliary LED lights	ledmod ledbrt ledspd	D4 (PWM)	Controls point lights, LED strips, or optic fibers. Dimmable based on the selected program. The on-board MOSFETs can power up to 20W per channel. Use the appropriate LED amplifier to control more powerful lights or strips.	Steam bath