Automatic liquid-flow control machines and instruments; Automatic valves; Chronographs for use as specialized time recording apparatuses; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Electronic metering faucets; Electronic timers; Junction boxes; Kitchen timers; Leak detecting device for water supplied home appliances consisting of water sensor, control unit with audible alarm and water valves; Level gauges; Mechanical timers; Pressure regulators for pipeline cryogenic liquids; Rain gauges; Smart home hubs comprised of voice-activated speakers, computer hardware, and downloadable software for controlling networked devices in the internet of things (IoT), operating internet-enabled and connected lighting apparatus and home security alarms; Thermo-hygrometers; Timers; Valves for controlling and regulating the flow of gases or liquids not being parts of plumbing, heating, cooling installations or machines; Water flow meters; Water treatment equipment, namely, devices connected to a water distribution line, which automatically injects a predetermined proportion of fertilizer into an irrigation system used by a greenhouse complex