L3Harris Indicator

The indicators were developed on the basis of the high requirement profile of difficult military applications and the aerospace industry. They offer a wide range of operating voltages and are installed in hermetically sealed miniature housings. This robust design even withstands shock, vibration and high temperatures.


Our latching feature assures fast positive response to a fault signal. The display ball changes color only when the indicator coil is pulsed by a BITE (Built-In Test Equipment) system. Our magnetic indicators have no bearings, springs or filaments to wear out and offer excellent visibility in high ambient light.


  • Electromagnetic latching display
  • Electrical or manual reset
  • Pulse operated
  • High visibility
  • Low power
  • Environmentally sealed
  • Rugged packaging
  • Custom design
  • Commercial & MIL-PRF-83287


When the indicator coil is energized with a 40 millisecond (or longer) pulse, the highly visible, two color display ball spins 180° and latches to the magnetic core. The displayed ball will remain magnetically latched to the core in the position last pulsed. Even if the fault signal is removed, the indicator will “remember” that a fault has occurred. Return to “No-fault” color is accomplished electrically. Model BHG (single coil) is reset by reversing polarity of input signal to the coil. Model BHGD (dual coil) is reset by pulsing a separate internal coil. Optional features include insulated lead wire termination, special lenses (radius dome, cylindrical, non-glare), O-ring panel seal, internally mounted diodes and RFI panel shield.

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Daniel Jennen
Daniel Jennen
Sales Director, Vice President
dje@alders.de +49 2152 8955-210