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Enhance Operating Safety with Quick, Visual Warnings by Redundant Illumination

led lamp block 1

EAO’s Innovative Series 04 Dual LED Lamp Block

EAO offers a Dual LED Lamp Block accessory for its Series 04 devices to reliably illuminate operational status of equipment with redundant illumination. This modern component integrates two LEDs in a single lamp for visual recognition to increase operating safety in end user control panels.

The Series 04 Dual LED Lamp Block allows one device to display different states in a unique way. With pulsed control of the inputs from two different sources, the dual LEDs appear to be constantly illuminated giving the user rapid, positive feedback of proper operation. However, if one input signal fails (0 VDC), only one source of power will exist triggering the unit to flash as a warning with only one “blinking” or pulsing signal.

Key customizable features include the panel size and symbols, different illumination colors, the number and arrangement of the symbols, as well as the ultra-thin mounting depth of less than 8 mm thickness, ideally for applications where the space envelope for status indicators are limited.

Key advantages of the Series 04 Dual LED Lamp Block Include:

  • Two separate LEDs in a single lamp block
  • Available in both 24 and 110VDC versions
  • Different states displayed in one device
  • Warning indication for failure of one input signal (0 VDC)
  • Reliable LED technology enabling a long service life
  • Availability for all illuminated EAO Series 04 devices (e.g. Indicators, pushbuttons, selectors, etc.)


HHP Associates, Inc., a division of ESI,  is the Florida representative for EAO Switches, a global technology leader and manufacturer of Human-Machine (HMI) systems and components serving the transportation, machinery, heavy-duty, lifting and moving, specialty vehicle, medical and automotive markets. Intuitive development skills along with global manufacturing capabilities, worldwide supply chains, and superior project and consultation management result in complete and innovative HMI Systems. HMI components include award-winning pushbuttons, indicators, emergency stop switches, rotary selectors, keylocks, and more.

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