1. A system for personnel at readily accessible locations comprising:one or more electrical, mechanical, transmitting and receiving devices, microprocessors and controllers configured to relay and/or switch on from a normally open configuration or off from a normally closed configuration, the source or line supply of all potentially hazardous equipment or energized/charged systems in a facility;
a visible and/or audible indicator configured to allow a first responder or system maintenance crew to have definitive on or off status of the source or line supply;
said system configured to require a lockout code sequence and/or mechanical lock out apparatus to re-energize the source or line supply; and
wherein a modular main control panel enclosure containing a communications module is configured to:
transmit and receive data to/from junction boxes/enclosures that are paired to the devices, and a processor board handling all front panel peripherals, displays, devices, and interaction, interfacing the main control box to external devices, and for supporting protocols for remote operation and telemetry, data logging for performance and forensic applications, and interaction with security and/or fire systems.