SFA Switch Box Kit, position B, GR selected

Switch Box Kit for the Model SFA Fluorescence Adapter

The Switch Box Kit is an accessory for the NIGHTSEA Model SFA Stereo Microscope Fluorescence Adapter. It enables you to mount two different wavelength excitation light heads on your microscope and switch between them easily. You will still need to manually change the barrier filter,  but it eliminates the need to swap out light heads on the gooseneck.

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How does this work?

The switch box kit consists of:

One BNC cable connects the SFA gooseneck lamp base to the input connector on the rear of the Switch Box. The other two cables connect the Switch Box outputs to the two light heads. Use the selector switch on the front of the Switch Box to select between the two light heads. The Light Head Hangers mount your light heads on the SFA adapter ring on the microscope.

(Click image for larger view)

(Note – Light heads not included with kit. Any of the BNC light heads can be used with the kit.)

The Light Head Hangers mount to the end of any of the thumbscrews on the SFA adapter ring. They are available in long and short pivot arm versions for use with long and short working distance microscopes.

  • Long working distance (LWD) – 6.3 cm (2.5 in.) and greater
  • Short working distance (SWD) – 6.3 – 4.6 cm. (2.5 – 1.8 in.)

Note that the Switch Box Kit is available only for SFA systems that use the BNC light head connector, and not the older V1 connector.

What is the benefit?

This accessory simplifies the process of switching between excitation wavelengths. You can have two different excitation sources mounted simultaneously and select between them with the flip of the selector switch. You will still need to manually change the barrier filter, but the overall switching process is speeded up and simplified.


What are the options, part numbers and pricing?

The two options with this accessory are the choice of long working distance (LWD) or short working distance (SWD) Light Head Hangers. The price of the Switch Box Kit is the same for both options.

  • SFA Switch Box Kit  – $350
    • SFA-SWK-L – Long working distance (LWD)
    • SFA-SWK-S – Short working distance (SWD)

How do I order?

Master distributorElectron Microscopy Sciences

Local microscope dealers – The Stereo Microscope Fluorescence Adapter and its accessories are also available from select local microscope dealers. If one of them referred you to the NIGHTSEA web site for more information, please go back to that reseller to place your order.

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