# Xtend GPIO input voltage levels

**URL:** <https://forum.sierrawireless.com/t/xtend-gpio-input-voltage-levels/4587>\
**Category:** Legacy FX/FXT series\
**Created:** [July 28, 2010, 10:33am UTC](https://forum.sierrawireless.com/t/xtend-gpio-input-voltage-levels/4587 "2010-07-28T10:33:39Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [August 2, 2010, 2:04pm UTC](https://forum.sierrawireless.com/t/xtend-gpio-input-voltage-levels/4587/2 "2010-08-02T14:04:51Z")

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> [@OOZ](#):
>
> Am I missing something in the documentation?

No, you’re not, I’m afraid - it really is rubbish! 😠

See: [Undocumented: Fastrack XTreme GPIO Current Ratings?](https://forum.sierrawireless.com/t/undocumented-fastrack-xtreme-gpio-current-ratings/4408/1)

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