Circuit boards provided with integrated circuits; Computer software for calculating optimal ducting layouts for industrial ventilation systems and instructional user guides sold as a unit; Computer software for calculating optimal ducting layouts for industrial ventilation systems; Electric control devices for heating and energy management; Electric or electronic sensors for voltage and sensing the magnetic field of electrical cables; Electric sensors; Electrical energy utilization metering devices complete with related software; Electronic control systems for machines; Electronic controllers for ventilation systems, dust collecting systems, regulating fan motor speeds of ventilation and dust collecting systems, woodworking and metalworking machinery vacuum systems, and systems for collecting fumes, paper trim, manufacturing residue, packaging trim, pharmaceutical dust, and food processing residue; Electronic controllers used to reduce power consumption; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Environmentally friendly automation systems, namely, embedded operating systems and pc based software, for monitoring specified conditions and controlling respective innovative devices within a designated area; Industrial calibration sensors; Industrial process control software; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; Voltage monitor modules