rH-D2S2 two-channel dimmer with two-channel transmitter is a combination of two dimmers and two contact inputs. The module sends information about contact closure or opening to the system and controls two AC230V receivers. Communication with the server takes place via radio. The module has two physical inputs for connecting two monostable potential-free contacts, and two inputs for connecting receivers. The power input load can be resistive (incandescent lamps), inductive (AC motors and transformers) and capacitive (fluorescent lamps). Power regulation is based on phase modulation with switching off in phase, in the range of 0-100%.