Schluter RS1 Smart Thermostat & Power Module
The grey Schluter DHE RR 1/BW power module cannot be used with the RS1 Smart thermostat. It is only compatible with the Schluter DHE 104/BW wifi thermostat, or the DHE RT 102/BW touchscreen thermostat.
Similarly, the white Schluter DHE RR 2/BW power module cannot be used with either of the afore mentioned thermostats (wifi or touchscreen). This power module is only compatible with the DHE RT 105/BW Smart thermostat.
See below for the appropriate combinations.
DHE RT 104/BW and DHE RT 102/BW are compatible with grey DHE RR 1/BW
When using the smart thermostat above with a power module, there is no polarity in the low voltage communication wires between the two devices. You will, however, have to change a setting in the thermostat so that it knows to look for the power module. If this setting is not change, the power module will not be recognized and controled by the thermostat.
Below image explains how to access and change this setting from off to EXP.