Voltage indicator

An electrical safety monitoring device, comprising:

• a first set of digital switches for each of a plurality of line inputs wherein each of the first set of digital switches is configured to switch between a first state when there is a positive voltage present on a corresponding one of the plurality of line inputs and a second state when there is no voltage present on the corresponding one of the plurality of line inputs;
• a second set of digital switches for each of the plurality of line inputs wherein each of the second set of digital switches is configured to switch between a first state when there is a negative voltage present on a corresponding one of the plurality of line inputs and a second state when there is no voltage present on the corresponding one of the plurality of line inputs;
• a first set of visual indicators, wherein each of the first set of visual indicators is electrically connected to one of the first set of digital switches;
• a second set of visual indicators, wherein each of the second set of visual indicators is electrically connected to one of the second set of digital switches;
• a first voltage-controlled oscillator operatively connected to the first set of digital switches for controlling a flash rate of the first set of visual indicators when the positive voltage is present above a first threshold level;
• a second voltage-controlled oscillator operatively connected to the second set of digital switches for controlling a flash rate of the second plurality of visual indicators when a magnitude of the negative voltage is present above a second threshold level.