The Finnleo CON-D11 digital controller is suitable for up to 9kW of 3-phase and 6kW of single-phase load. 
The control panel is splash proof and should be installed in a dry place, as close to the sauna as possible. The included temperature sensor unit, which controls cabin temperature and incorporates an over-temperature device, should be mounted above the sauna heater approximately 40mm from the ceiling.
The controller can be pre-programmed for up to 24 hours to switch the heater on for a maximum time of 4 hours 10 minutes.
The temperature can be set by the user up to 110 degrees celsius.
There are 2 further controls available:
Light, up to 100W is internally wired and ready for use.
Fan, up to 100W NOT internally wired.
IMPORTANT NOTE
This controller will only operate for 4 hours and then switch itself OFF, this is a safety feature to prevent leaving the sauna ON for extended periods.
If the controller is set for 3-phase use it can be wired for single-phase use by linking together incoming L1, L2 & L3 and importantly linking together the 2 Neutral (N) connections. A minimum 2.5mm sq. cable should be used for links. 
The outgoing U, V & W connections can be linked at the controller, or at the heater connections.
Dimensions: 25cm wide; 22cm high; 8cm deep.