Mesh network of lighting devices having communication and control functions

A mesh network of lighting devices having communication and control functions, the mesh network comprising:

• a plurality of units, wherein each unit includes an electrical circuit having:
• an LED driver module, a control I.O. board, a sensor board, a solid-state memory, a lamp driver with dimming and RBG capability, an LED lamp, interpret sensors, a light source, an external port, a power source, a Wi-Fi transceiver, a mesh radio, a Wi-Fi sensor, a monitor enabled for displaying temperature, voltage, current and power levels, and a computer device having a data processing device, and a data storage device storing a software instruction set;
• a switching stage with a reset feature is enabled for switching to open circuit operation when said sensor board senses an over-voltage condition;
• wherein, signal transfer between said units is enabled with and between an input-output stage of said electrical circuit via said Wi-Fi transceiver.