| Application |  |
N1 Room thermostat M1 1- or 3-speed fan Y1 Valve actuator, 2- or 3-position Y1, Y2 Valve actuator, 2-position E1 Electric heater C1, C2 1-stage compressor S1, S2 Switch (keycard, window contact, presence detector, etc.) B1, B2 Temperature sensor (return air temperature, external room temperature, changeover sensor, etc.) CE+ KNX data + CE- KNX data – |
| 2-pipe, 2-position | ||
2-pipe, 3-position
|
 |
|
| 2-pipe and electric heater |  |
|
4-pipe
|
 |
|
1-stage compressor
and / or
|
 |
|
| 1-stage compressor and electric heater |  |