# Q: How to build up line connection of ITC-1000F?

**URL:** <https://community.inkbird.com/t/q-how-to-build-up-line-connection-of-itc-1000f/57>\
**Category:** Questions & Answers\
**Tags:** smart-controller\
**Created:** [September 29, 2021, 9:21am UTC](https://community.inkbird.com/t/q-how-to-build-up-line-connection-of-itc-1000f/57 "2021-09-29T09:21:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![INKBIRD](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.inkbird.com/inkbird/32/366_2.png) [@INKBIRD](https://community.inkbird.com/u/INKBIRD)\
**Post date:** [September 29, 2021, 9:21am UTC](https://community.inkbird.com/t/q-how-to-build-up-line-connection-of-itc-1000f/57/1 "2021-09-29T09:21:47Z")

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A: Please do as below:

- When input and out are the same  
 ![图片1](https://canada1.discourse-cdn.com/flex031/uploads/inkbird1/original/1X/cb7c3d0d3b59e8ef5553c901ded41b91d39c2d36.jpeg)

- Groud lead  

- When input and out are different  
 ![图片3](https://canada1.discourse-cdn.com/flex031/uploads/inkbird1/original/1X/2ad88cd635ea6c6a8c4367f063b9401708062c90.jpeg)

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**Author:** ![Shaun](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@Shaun](https://community.inkbird.com/u/Shaun)\
**Post date:** [March 5, 2022, 4:13pm UTC](https://community.inkbird.com/t/q-how-to-build-up-line-connection-of-itc-1000f/57/2 "2022-03-05T16:13:30Z")

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In the case where input and out are different … can I use a 12v heater and/or fan when power is 110v ?