A universal system for managing underfloor and radiator heating, with an additional WiFi module for on-line management. Single controller can manage up to 8 zones. Whole system can manage up to 40 zones defined by using a temperature measuring device (sensor or regulator).

Series L-12 system is used to manage thermoelectric actuators mounted on manifold valves. In a mixed system, main unit also controls the STT-868, STT-869 or G-X wireless electric actuators.

Master controller EU-L-12 functions:

• the ability to handle max. 50 thermoelectric actuators, zones can be created using
8 dedicated wired regulators or wireless system regulators or temperature sensors,
or wired temperature sensors C-7p:
– 3 zones with 3 outputs each (if there are more actuators, the maximum output load is 0,3A)
– 5 zones with 2 outputs each (if there are more actuators, the maximum output load is 0,3A)
• one 230V output for a pump
• voltage-free relay (to control an additional heating device)
• possibility of controlling wireless actuators STT-868/STT-869/G-X (the maximum of 6 per zone)
• in each zone, it is possible to install up to 6 wireless EU-C-2n window opening sensors
• possibility of connecting 6 executive modules EU-MW-1 or EU-MW-1/230
• possibility of connecting EU-i-1 or EU-i-1m valve module
• up to 4 EU-ML-12 slaves can be connected to master controller EU-L-12
• optional EU-M-12 control panel can be connected
• possibility to control the installation via the Internet, eModul application - EU-WiFi L module included
• heating/cooling function
• software update via USB
• OpenTherm communication