# \#power-up

**URL:** https://forums.digi.com/tag/power-up/79.md

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## [Xbee 3 Pro pairing power-up period](https://forums.digi.com/t/xbee-3-pro-pairing-power-up-period/21259)

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**Author:** [@matheusdsg](https://forums.digi.com/u/matheusdsg)\
**Replies:** 1\
**Last updated:** [April 8, 2020, 8:22am UTC](https://forums.digi.com/t/xbee-3-pro-pairing-power-up-period/21259 "2020-04-08T08:22:36Z")

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Hi guys, I would like to know if the Xbee 3 Pro provides some automatic pairing mode for a few seconds on power up. My goal is the possibility of master / slave pairing could be done directly in a period of for example …

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## [Power Up GPIO DIfferences in 7.4 and earlier revs](https://forums.digi.com/t/power-up-gpio-differences-in-7-4-and-earlier-revs/3648)

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**Author:** [@jwormsley](https://forums.digi.com/u/jwormsley)\
**Replies:** 1\
**Last updated:** [December 24, 2008, 8:53am UTC](https://forums.digi.com/t/power-up-gpio-differences-in-7-4-and-earlier-revs/3648 "2008-12-24T08:53:50Z")

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My application uses the various I/O lines on the ConnectME as a sort of handshake system. I have another processor talking to the ME and it monitors DTR as a online/offline flag, and RTS as a BUSY/AVAILABLE flag. Likew…