---
title: blog 2 offer sinking sourcing
description: Learn how and why to choose sinking and sourcing modules in automation
---

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## Get a Better Understanding of Sinking and Sourcing

### The latest OptoBlog post on Sinking and Sourcing answers your questions in more detail.

![](https://info.opto22.com/hs-fs/hubfs/sink_source_blog2.jpg?width=320&height=373&name=sink_source_blog2.jpg)Sinking and sourcing basically refer to the two methods of wiring a digital DC circuit. How do you choose between them?

Read an in-depth blog post that answers this question and more:

- When is it more cost-effective to choose sinking over sourcing?
- What effect does an existing electrical panel have on your choice?
- What do you do if you have a mix of sinking and sourcing wiring?

 

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