Measuring apparatus and instruments; electric measuring apparatus and instruments; diagnostic apparatus, not for medical purposes; remote monitoring systems; monitoring devices and apparatus; electric monitoring apparatus; probes for scientific purposes; sensors; sensors for scientific use to gather plant biometric data; sensors for scientific use to gather plant bioelectrical data; remote sensors; plant health status sensors; bioelectrical sensors; bioelectrical property monitors; bioinformatic monitors; bioimpedance sensors; temperature sensors; light meters; actinometers; data processing apparatus; electrical signal processing apparatus; electrical signal acquisition apparatus; data processing equipment; data storage devices; electric monitoring apparatus for agriculture, horticulture, viticulture and forestry; intercommunication apparatus; transmitters of electronic signals; telecommunications apparatus; telecommunication apparatus for agriculture, horticulture, viticulture and forestry; units composed of microprocessors and integrated transmitters and receivers installed in the field at orchards, vineyards, forests and crops to collect data from monitoring and control installations, to transmit the data to central processing facilities, and to receive data transmissions directed to the installations; wireless controllers to monitor and control the functioning of other electronic devices; electronic monitors to collect agricultural, horticultural, viticultural and forestry data and settings, including date, time, plant bioimpedance and temperature data and settings, from plants, to monitor plant health status; electronic monitors and monitor modules for monitoring electric properties, for example, capacitance, inductance, resistance, current, voltage and impedance; instruments and apparatus for measuring electrical and electronic properties; electrochemical analysers; electrochemical impedance spectroscopy instruments and devices; biosensing devices; interfaces and peripheral devices for computers; interfaces for computers, including analogue digital interfaces for converting analogue electrical signals to digital signals.