# Sierra Wireless compatible modems

**URL:** <https://forum.inductiveautomation.com/t/sierra-wireless-compatible-modems/43848>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [February 25, 2021, 8:51pm UTC](https://forum.inductiveautomation.com/t/sierra-wireless-compatible-modems/43848 "2021-02-25T20:51:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![julian.medina](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/julian.medina/32/9805_2.png) [@julian.medina](https://forum.inductiveautomation.com/u/julian.medina)\
**Post date:** [February 25, 2021, 8:51pm UTC](https://forum.inductiveautomation.com/t/sierra-wireless-compatible-modems/43848/1 "2021-02-25T20:51:13Z")

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Hi!

So, I want to use the SMS module for alarms which says that it’s only compatible with Sierra Wireless’ _Airlink_ modules. However, there are several out them available (RV55, RV50 and LX40 -each with sub-versions).

However, only the knowledgebase lists compatibility for some modems:

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/4/a42ca912a041822dc56acf3333f26b951b7b2ad4.png)

Are the others not compatible?  
Is there an up-to-date list with compatible modems?

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**Author:** ![diat150](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@diat150](https://forum.inductiveautomation.com/u/diat150)\
**Post date:** [February 25, 2021, 8:52pm UTC](https://forum.inductiveautomation.com/t/sierra-wireless-compatible-modems/43848/2 "2021-02-25T20:52:39Z")

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I would imagine the rv50x would work, which is the current version of the rv50.

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<div class="post-metadata">

**Author:** ![julian.medina](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/julian.medina/32/9805_2.png) [@julian.medina](https://forum.inductiveautomation.com/u/julian.medina)\
**Post date:** [February 25, 2021, 8:59pm UTC](https://forum.inductiveautomation.com/t/sierra-wireless-compatible-modems/43848/3 "2021-02-25T20:59:06Z")

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I would assume it too, but I would rather be sure than assume things.

Also, the LX40 is also of the Airlink family, so it should be compatible too, but… is it?

For me, the LX40 is a better choice because I only need to send SMS, not acces the internet from said device, which is what triggers my request for a list of approved modems.