9 Electrotechnical and electronic devices for harvesting mechanical energy, energy conversion, and energy generation, namely, electrical power supplies for sensors and electric actuators for pollutants, heat, motion, location detection, communication, pressure and electricity; electric vibration sensors for applications such as monitoring equipment and environmental conditions, vibration meters, radio receivers, radio transmitters, piezo electric sensors, piezo electric actuators, and optical transmitters; weighing, signaling, measuring, counting, recording, monitoring, testing, and open- and closed-loop control and switching devices, namely, radio-controlled electric switches, electric sensors and electric actuators for pollutants, location detection, communication, heat, motion, pressure and electricity