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; 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