Ondřej Karas of DoItWireless writes:
Sometimes, you need to measure analog signal and then switch something on or off according to the result. This short example shows, how to do it. Everything you need is DDC-SE-01 module as a sensor module and DDC-RE-01 as relay module. Of course you need DK-EVAL-04 or CK-USB-04 for both of them as a master module.
This example originates from IQRF contest Example 12. It was simplified and changed for TR-52D module.