# Max Ratings for external power supply inline with Otii

**URL:** <https://forum.qoitech.com/t/max-ratings-for-external-power-supply-inline-with-otii/463>\
**Category:** Tips & tricks\
**Created:** [April 3, 2023, 10:29am UTC](https://forum.qoitech.com/t/max-ratings-for-external-power-supply-inline-with-otii/463 "2023-04-03T10:29:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mustafaykanat](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@mustafaykanat](https://forum.qoitech.com/u/mustafaykanat)\
**Post date:** [April 3, 2023, 10:29am UTC](https://forum.qoitech.com/t/max-ratings-for-external-power-supply-inline-with-otii/463/1 "2023-04-03T10:29:39Z")

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Hi,

I would like measure current with Otii Arc and my Otii can power up to 5V. I need to test my circuit with 19V input and it will flaw maximum of 500mA current and Can Otii handle this type of application?

BR  
Mustafa

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**Author:** ![bjorn.rosqvist](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.qoitech.com/bjorn.rosqvist/32/238_2.png) [@bjorn.rosqvist](https://forum.qoitech.com/u/bjorn.rosqvist)\
**Post date:** [April 4, 2023, 6:32am UTC](https://forum.qoitech.com/t/max-ratings-for-external-power-supply-inline-with-otii/463/2 "2023-04-04T06:32:02Z")

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Hi Mustafa and welcome to the forum,

Otii Arc can not handle this, but our other product Otii Ace Pro can.

> **[Otii Ace Pro - Qoitech](https://www.qoitech.com/otii-ace/)**
>
> Otii Ace Pro Otii Ace Pro Power profiler, DC energy analyzer, power supply, digital multimeter, source measure unit, power debugger. One box to rule all.  Now for higher voltages. Still easy to use, yet more advanced.  Buy Overview...

Otii Ace Pro can handle up to 25V.

Best regards,  
Björn