# Difference between "Programmable XBee-Pro(S2) ZB" and "Programmable XBee-Pro(S2B) ZB"

**URL:** <https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208>\
**Category:** XBee Programamble (S2C & 900 HP)\
**Created:** [November 6, 2011, 12:44pm UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208 "2011-11-06T12:44:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![shashi](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@shashi](https://forums.digi.com/u/shashi)\
**Post date:** [November 6, 2011, 12:44pm UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208/1 "2011-11-06T12:44:03Z")

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Hello  
I have small query about the module that i have.Can any one tell me?  
I have programmable XBee-Pro ZB module(XBP24BZ7).  
I need to know my module is ‘S2B’ or ‘S2’ type.  
So please tell me difference between them?

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**Author:** ![kavya](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@kavya](https://forums.digi.com/u/kavya)\
**Post date:** [November 8, 2011, 2:05pm UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208/2 "2011-11-08T14:05:49Z")

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Hi,

XBP24BZ7 is a S2B module, the 6th letter “B” indicates that it is a S2B module.

Regards!

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**Author:** ![shashi](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@shashi](https://forums.digi.com/u/shashi)\
**Post date:** [November 9, 2011, 9:53am UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208/3 "2011-11-09T09:53:46Z")

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ok  
Thanks Kavya

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**Author:** ![AlanPattinson](https://avatars.discourse-cdn.com/v4/letter/a/7ba0ec/32.png) [@AlanPattinson](https://forums.digi.com/u/AlanPattinson)\
**Post date:** [November 11, 2011, 12:09pm UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208/4 "2011-11-11T12:09:40Z")

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> Hi,
> 
> XBP24BZ7 is a S2B module, the 6th letter “B” indicates that it is a S2B module.
> 
> Regards!

Your answer is good. What do you mean by that?

> the 6th letter “B”  
> Tell me.

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**Author:** ![kavya](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@kavya](https://forums.digi.com/u/kavya)\
**Post date:** [November 30, 2011, 3:10pm UTC](https://forums.digi.com/t/difference-between-programmable-xbee-pro-s2-zb-and-programmable-xbee-pro-s2b-zb/11208/5 "2011-11-30T15:10:08Z")

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XBP24BZ7 is the part number of the module, each letter is having some indication. XB means XBee module, 3rd letter ‘P’ indicates PRO (extended range) version, 6th letter ‘B’ indicates that it is a S2B module.

Hope this helps.