Description
The Honeywell 199840 Rocker Style Switch indicator light is used in HVAC systems to provide clear on/off status. This component uses a rocker switch with an indicator light to give it both a control and a status function for the circuit. When the switch is turned to the ‘ON’ side it lights because all the connected equipment is on. This switch indicator light is normally placed on furnaces, air handlers, and thermostats, and can instantly tell the technician whether power is reaching a certain unit. Advantages are simplicity of use, instant visibility of the results, and increased diagnostic effectiveness for both HVAC professionals and homeowners.
