# How to connect to DTAFast S-Series ECU

**URL:** <https://forum.realdash.net/t/how-to-connect-to-dtafast-s-series-ecu/82>\
**Category:** DTAFast S-Series\
**Created:** [August 13, 2019, 8:41am UTC](https://forum.realdash.net/t/how-to-connect-to-dtafast-s-series-ecu/82 "2019-08-13T08:41:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![realdashdev](https://forum.realdash.net/user_avatar/forum.realdash.net/realdashdev/32/6_2.png) [@realdashdev](https://forum.realdash.net/u/realdashdev)\
**Post date:** [August 13, 2019, 8:41am UTC](https://forum.realdash.net/t/how-to-connect-to-dtafast-s-series-ecu/82/1 "2019-08-13T08:41:16Z")

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See DTAFast S-Series manual section 9.15:

1. Serial Data Output for Dash
2. RS232 Data Stream: ON
3. Number of Header Bytes: 4
4. Header byte values: 255, 255, 255, 255