# \#model

**URL:** https://forums.digi.com/tag/model/4100.md

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## [There is not an active bootloader in the module.](https://forums.digi.com/t/there-is-not-an-active-bootloader-in-the-module/22425)

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**Author:** [@sachin25](https://forums.digi.com/u/sachin25)\
**Replies:** 1\
**Last updated:** [June 22, 2021, 8:32am UTC](https://forums.digi.com/t/there-is-not-an-active-bootloader-in-the-module/22425 "2021-06-22T08:32:54Z")

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Looking for active bootloader… \[ERROR\] There is not an active bootloader in the module. Resetting and entering bootloader… \[ERROR\] PutData1: Sent only 0 of 1 bytes

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## [Does anyone know if there is an available 3D CAD model for the "XBee 3 Cellular LTE-M/NB-IoT" modem?](https://forums.digi.com/t/does-anyone-know-if-there-is-an-available-3d-cad-model-for-the-xbee-3-cellular-lte-m-nb-iot-modem/20823)

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**Author:** [@Adam\_C](https://forums.digi.com/u/Adam_C)\
**Replies:** 1\
**Last updated:** [October 29, 2019, 11:36am UTC](https://forums.digi.com/t/does-anyone-know-if-there-is-an-available-3d-cad-model-for-the-xbee-3-cellular-lte-m-nb-iot-modem/20823 "2019-10-29T11:36:42Z")

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I’m designing an enclosure for a sensor device which uses the XBee 3 Cellular LTE-M/NB-IoT and I want to make sure everything fits inside the enclosure.

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## [Am i stuck with one xbee on the control computer for every xbee remote? Which unit is recommend for such a use case?](https://forums.digi.com/t/am-i-stuck-with-one-xbee-on-the-control-computer-for-every-xbee-remote-which-unit-is-recommend-for-such-a-use-case/20635)

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**Author:** [@jwoodyu](https://forums.digi.com/u/jwoodyu)\
**Replies:** 0\
**Last updated:** [July 16, 2019, 9:28am UTC](https://forums.digi.com/t/am-i-stuck-with-one-xbee-on-the-control-computer-for-every-xbee-remote-which-unit-is-recommend-for-such-a-use-case/20635 "2019-07-16T09:28:41Z")

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I need to send serial information to 2 -3 Arduino simultaneously over RF, 1000’ line of sight. It is very little info for a simple display. There are soo many options i am looking for the most direct, simple and cost eff…