Patent ID: 7081724

Claim:
An electrical actuator configured to operate a closing, darkening or solar protection element and operatively coupled to a mains input voltage source having a mains frequency, the actuator in a common enclosure comprising: a direct current motor; a control board configured to control the motor; an AC/DC voltage converter configured to convert and lower the input voltage source and having at least one switch operating at a switching frequency (F 1 ); a radio frequency (RF) receiver configured to receive external signals at a receiver frequency (F 0 ); and wherein the switching frequency is less than twice the mains frequency and/or the ratio of the switching frequency (F 1 ) to the receiver frequency (F 0 ) ranges between 2.2×10^−5 and 2.2×10^−4 so that energy generated by the AC/DC voltage converter does not interfere with the RF receiver.