ZWO Mini Electronic Filter Wheel (EFW) - 5 x 1.25″ or 5 x 31mm

ZWO Mini Electronic Filter Wheel  (EFW) - 5 x 1.25″ or 5 x 31mm


Incoming - Shipped 2-4 working days.

Model:  zwo_efw_mini
Part Number:  Z602-EFW-MINI
Brand:  ZWO



  • EFWmini Body
  • T2 Nosepiece
  • 1.25" Holder to T2
  • T2-T2
  • USB2.0 Cable
  • M2 Screws & Washers for 31mm Filters

New! ZWO EFWmini - the smallest and most lightweight 1.25" electronic filter wheel available - only 300g!


  • Supports 5x 1.25" mounted filters or 5x 31mm unmounted filters.
  • Stepper motor made by NPM from Japan - quality and reliability you can trust.
  • Rotates in both directions for faster filter selection
  • CNC machined body from a full block of aircraft grade aluminium enabling a very thin 20mm design.
  • Powered by USB - max consumption around 150ma@5v
  • ASCOM driver

Filter to sensor distance when connected to the ASI1600 is around 10mm, you can use 1.25" filters without vignetting up to f/5 or 31mm filters up to f/2.

Includes M2 screws and washers required for fixing unmounted 31mm filters.

Important Note: 1.25" filters require threads shorter than 3mm and the height without threads must be less than 7mm.

Camera in picture not included ;-) The short USB cable pictured is supplied with the ASI1600 cameras with USB hubs.

Mechanical Drawing

There are currently no specifications available for this product.

The following manuals and downloads are available for this product:


ZWO Software and Drivers


ZWO Mini Electronic Filter Wheel (EFW) - 5 x 1.25″ or 5 x 31mm Questions & Answers

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October 2017 / View Older
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