Climate control systems consisting of digital thermostats, air conditioning, heating, ventilation and drying control devices; Electrical and electronic connectors; Electric power converters; Electronic components, namely, piezoelectric switches; Electronic proximity sensors and switches; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; Pressure measuring apparatus; Pressure sensors; Temperature sensors; Temperature switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; Thermistors; Valves for controlling and regulating the flow of gases or liquids not being parts of plumbing, heating, cooling installations or machines
Electrical and Scientific Apparatus