To give requirements and tests for electronic control devices, a general term to cover electronic switches, HBES/BACS switches and electronic extension units. It applies to electronic switches and to HBES/BACS switches, for alternating current (AC) only with a rated switching voltage not exceeding 250 V and a rated current not exceeding 16 A, intended for household and similar fixed electrical installations, either indoors or outdoors. It also applies to electronic extension units with a rated supply voltage not exceeding 250 V AC and 120 V DC. This Part of IEC 60669 also applies to electronic control devices which include integrated radio receivers and transmitters.