Series 04 Dual LED Lamp Block


EAO, the expert partner for innovative, intuitive and reliable Human Machine Interfaces (HMIs), announces the availability of the Dual LED Lamp Block accessory for its Series 04 illuminated devices. This modern component integrates two LEDs in a single lamp block providing quick, visual recognition and redundant illumination to increase operating safety in the driver’s cab on control panels within rail applications.


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.


Durability combined with dependability enables the Series 04 Dual LED Lamp Block to satisfy the requirements of the passenger transportation industry, particularly of the rail sector.


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.)
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