data sensors for measuring environmental parameters, namely, temperature and soil moisture; data repeaters for repeating data transmissions between a remote wireless data sensor and a wireless receiver in communication with a data processor; data receivers comprising an antenna and electronic circuitry for receiving data transmissions from a wireless data network and for communicating the received data to a data processor, namely, a computer, connected thereto; data collection systems comprised of a computer running software for configuring a data communications network and for receiving, processing, storing and displaying data received from the data communications network, a receiver in communication with the computer for receiving data from the data communications network, electronic data sensors for measuring and transmitting environmental data to the receiver and computer, and repeaters for repeating the transmitted environmental data from the electronic data sensors to the receiver and computer; computer software for configuring a communications network comprised of remote electronic data sensors and electronic data transmission repeaters; computer software for interfacing a computer running the software with networked remote data sensors and for causing the computer to receive, process, store and display data received from the networked remote data sensors