Electronic monitoring and control systems; digital electronic control devices; electronic process control units; electronic remote control apparatus; wireless control devices for remote monitoring and control of the operation and status of other electric, electronic and mechanical apparatus or systems; intelligent gateways for communication; electronic data processing systems; computer programs for data processing; communication networks; communication software; wireless communication devices; network communication devices; electronic communication installations; data communication hardware; safety devices, namely, safety warning apparatus, safety monitoring apparatus, safety light curtains, electric security surveillance apparatus, safety markers; protection devices, namely, protective sheaths for electric lines; signaling devices, namely, signal receiving apparatus, electric signaling apparatus, digital signal processing apparatus, electronic signal transmitters, luminous or mechanical signaling panels.