A mesh network of temperature probes which measures the internal temperatures of compost piles and wirelessly transmits the temperature data to a computer; Computer hardware, namely, wireless network extenders; Computer network bridges; Computer network hubs; Electronic plant moisture sensor; Electronic proximity sensors and switches; Electronical sensors for measuring solar radiation; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Gas sensors for measuring gas concentration; Humidity sensor with integrated digital and analog output circuitry used in automotive, appliance and light industrial applications to sense both relative humidity and temperature environmental conditions; Industrial wireless point-to-multipoint radio; Leak detecting device for water supplied home appliances consisting of water sensor, control unit with audible alarm and water valves; Light systems comprising light sensors and switches; Liquid level sensors; Microsensors for measurement of pressure, acceleration, force and flow, namely, silicon piezoresistive pressure sensors; Occupancy sensors, namely, electronic devices which detect the presence of occupants and control the lighting system accordingly; Oil level sensors; Optical sensors; Photoelectric sensors; Pollutant sensors; Pressure sensors; Proximity sensors; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Sensors for determining position, velocity, acceleration and temperature; Sensors for measuring concentrations of chemicals in water; Sensors for the determination of temperatures, positions and distances; Telecommunications hardware and software for monitoring and alerting remote sensor status via the Internet; Temperature sensors