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+--- Thread: SMS 3G modem (/showthread.php?tid=1572)
SMS 3G modem - Kai-Roger - 03.09.2018
Hi.
I find that 3G modems tend to be replaced by newer models as time goes by. Any tips for a compact and cost effective 3G modem for sending/reciving sms with LM5?
BR
Kai-Roger
RE: SMS 3G modem - admin - 03.09.2018
As an alternative you can try a separate modem with RS232 interface.
RE: SMS 3G modem - Kai-Roger - 03.09.2018
Thanks. I was hoping for tips about something like the Huawei E303 because of the simlicity and small formfactor.
https://www.google.no/search?q=Huawei+E303&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjB8Pezx57dAhXCiiwKHRfiDEIQ_AUICigB&biw=1920&bih=943
I plan to have the USB stick modem hidden in a wall plastic junction box above the fuse cabinet.
RE: SMS 3G modem - admin - 03.09.2018
If you need USB you can try something like this:
https://www.ebay.com/itm/USB-to-GSM-Serial-GPRS-SIM800C-Module-With-Bluetooth-Sim900a-Computer-Control-Ca/163131514003
RE: SMS 3G modem - Kai-Roger - 03.09.2018
Thanks. Do you know if this product have good quality and stability?
Is there a good RS232 modem to recommend altso, as an alternative?
RE: SMS 3G modem - admin - 03.09.2018
Haven't really tried it but should be fine for SMS.
Similar RS232 device:
https://www.ebay.com/itm/GSM-GPRS-ATK-SIM900A-RS232-Serial-Port-Development-Board-Module/201970304125
Both USB and RS232 use GSM modules from the same manufacturer (SIMCom). RS232 version might be bit better because of separate power supply though USB has an advantage of power control via scripts on LM5 so you can reboot the device if needed.
RE: SMS 3G modem - Kai-Roger - 03.09.2018
Cool. I will look into it. Thanks.
RE: SMS 3G modem - Thomas - 03.09.2018
Hi
Just a question. Wouldn't be VoIP client integrated in LM better solution?
RE: SMS 3G modem - admin - 04.09.2018
Yes, there are many other solutions like paid web services for SMS or something like a bot for Telegram. Using a local modem has one advantage of not depending on Internet connection.
RE: SMS 3G modem - Kai-Roger - 04.09.2018
Yes. In my case, i will have the sms sender as a security backup solution in buildings in parallel with communication over the internet.
RE: SMS 3G modem - Kai-Roger - 19.10.2018
Is it possible to use a USB2.0 hub on the LM USB port, to connect both GSM and Z-Wave stick?
Yes probably necessary to use power injector.
BR
Kai-Roger
RE: SMS 3G modem - edgars - 19.10.2018
yes, you can do that. But please use external powering for the USB-hub.
RE: SMS 3G modem - Rajesh - 27.07.2019
Is it LM5 Supports to 4G or 5G USB dongle for sending SMS?
RE: SMS 3G modem - admin - 31.07.2019
Depends on the model of the dongle, which one do you want to use?
Our recommendation is to use reactor with built-in 3G or 4G modem.
Advantages over USB:
- External antenna which greatly improves connection quality
- Can be used for both Internet access and SMS
- Built-in power supply that uses 24V instead of 5V (USB). This provides much better stability, the modem won't turn off unexpectedly as some USB modems do during transmission due to excessive power usage