[ INTRUSION DETECTORS AND ANTI-INTRUSION ALARMS; ] OCCUPANCY SENSORS AND ENERGY SAVING SENSORS; [ FRESNEL LENSES; ] ELECTRONIC LIGHT DIMMERS; [ LIGHT EMITTING DIODES; LIGHTING BALLASTS; LENSES FOR PASSIVE INFRARED SENSORS; ] REMOTE CONTROLS FOR ELECTRIC LIGHTS; [ REMOTE CONTROLS FOR LED LIGHTING FIXTURES; ] TRANSMITTERS OF ELECTRONIC SIGNALS