# Send SMS via Node-Red without internet

**URL:** https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800
**Category:** General
**Created:** [9 September 2021 07:57 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800 "2021-09-09T07:57:57Z")
**Posts on this page:** 7
**Page:** 1

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### Author: ![subwayfootlong](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/subwayfootlong/32/42037_2.png) [@subwayfootlong](https://discourse.nodered.org/u/subwayfootlong)
#### Post date: [9 September 2021 07:57 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/1 "2021-09-09T07:57:57Z")

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Hi all curently im using an external service provider,twilio, to send SMS.  
However, I would like to send SMS without using internet as the data is sensitive. Is there any hardware that I can interface with node red easily to send SMS using the traditional methods. e.g phone sending sms with sim card

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### Author: ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [9 September 2021 08:10 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/2 "2021-09-09T08:10:44Z")

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You can have a phone with tasker or Automate installed. These can receive http or mqtt request locally, they can then parse the message and send sms from the phone directly.

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### Author: ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [9 September 2021 08:49 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/3 "2021-09-09T08:49:14Z")

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I presume you could do this with a mobile adaptor plugged into the pc, along with appropriate software.

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### Author: ![mudwalker](https://avatars.discourse-cdn.com/v4/letter/m/47e85d/32.png) [@mudwalker](https://discourse.nodered.org/u/mudwalker)
#### Post date: [9 September 2021 09:52 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/4 "2021-09-09T09:52:24Z")

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I use a Maestro GPRS Modem to achieve the same result. Quick look suggests _telematic modems_ is a good search term.

It runs by sending AT commands over serial - there seems to be USB versions now. In my case, it is connected from another controller (not Node RED), but that is historic. I have used a USB to Serial convertor when testing.

They are comparatively expensive, but then this was for a mission critical solution. It has been running for years without failure. (There, that has jinxed it! 😅)

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### Author: ![wb666greene](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/wb666greene/32/6534_2.png) [@wb666greene](https://discourse.nodered.org/u/wb666greene)
#### Post date: [9 September 2021 21:28 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/5 "2021-09-09T21:28:11Z")

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I used to do this with an android phone running node-red via Termux. It sort of worked, Android phones seem to have issues if left on the charger 24/7

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### Author: ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [9 September 2021 21:39 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/6 "2021-09-09T21:39:20Z")

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> [@subwayfootlong](#):
>
> However, I would like to send SMS without using internet as the data is sensitive

You know SMS is not secure right?

"Why SMS Text Messages Aren’t Private or Secure" [https://www.howtogeek.com/709373/why-sms-text-messages-arent-private-or-secure/amp/](https://www.howtogeek.com/709373/why-sms-text-messages-arent-private-or-secure/amp/)

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### Author: ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)
#### Post date: [9 November 2021 08:45 UTC](https://discourse.nodered.org/t/send-sms-via-node-red-without-internet/50800/9 "2021-11-09T08:45:13Z")

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