Electronic probes for the survey of temperatures, humidity and pressure; Electronic control panels; Surveying apparatus for the supervision of buildings and plants; Electrical controllers; electronic controllers with remote control functions for operating heating, ventilating, air-conditioning and refrigerating systems; Humidity, pressure and temperature sensors; Temperature recorders; Computer interface boards, hardware and software for use in refrigeration, air conditioning or humidification management and control; Humidistats; fan speed regulators; electronic expansion valves; all of the foregoing being equipment parts and accessories for humidification units/plants, air-conditioning units/plants and refrigeration units/plants; Programmable electric and electronic controllers for heating, ventilating, air-conditioning and refrigerating systems, and components and accessories thereof, namely, electronic user interface boards incorporating displays, electronic communication circuit boards, electric and electronic expansion circuit boards, electric and electronic humidifier interface circuit boards, electric and electronic input/output circuit boards, encoded electronic chip cards for downloading and uploading software to the programmable electric and electronic controllers for heating, ventilating and air-conditioning/refrigerating systems