ARCELI SIM800C USB GSM GPRS Wireless Module Quad-Band, 850/900/1800/1900MHz, CH340T USB Chip Support 2G 3G 4G Network USB Communication SMS Data Transmission with Antenna

This product works well with a Raspberry Pi 4

When the module arrived, I checked it over, and noticed that the Oscillator that was soldered onto the board appeared to be shorted out as it was badly soldered and sharp. I plugged the device in anyway, expecting to hear the computer recognizing the device which didn't happen. I then resolved the oscillator short and tried again. This time the computer recognized the device as a serial to USB converter but anything more than that was a failure, when a SIM card was installed it didn't start to flash the LED or anything. It looks like its been soldered with a wooden stick not any soldering equipment. It didn't work, and has been returned.

Using it for mqtt Sets up well with ppp speed a little slower than expected. All in all works well

La uso en mi home assistant como módem y GPRS. Es algo difícil de configurar y el fabricante no da mucha información pero con los comandos adecuados se convierte en una gran herramienta. Puedo enviar sms desde mi Raspberry y va de maravilla

Ne ho comprati fino adesso un centinaio, sempre tutti funzionanti e durevoli. Personalmente con stampante 3D ho realizzato un piccolo contenitore per renderlo più maneggevole.

Utilisé avec Home-Assistant (en docker sur une VM Debian sur un Serveur ESXi). Le module est reconnu par ESXi, ce qui permet de le monter sur une VM sans avoir à faire de passthrough. Monté ensuite à travers Docker et ajouté via l'intégration GSM de Home-Assistant, envoi/réception de SMS OK. A noter que je n'ai pas réussi à le faire fonctionner avec une SIM Free (0€), j'ai du prendre une SIM Bouygues. A noter aussi que le module était sur un HUB USB, j'ai du ajouter une alimentation au HUB pour que ça fonctionne correctement.

I was about to give up on this product, untill I stumbled on a random forum post online, where someone mentioned that this chip will not be properly powered, when plugged directly into any usb-port on for example a motherboard, a Raspberry Pi or similar. I then tried plugging it into a powered USB-hub connected to my PC, and voila - works wonderfully now! So to any potential buyers, be sure that you can plug it into a USB-port with enough output power, an ordinary plug on a motherboard is not adequate.

Unfortunately I received a defective unit. I believe several SMD 0603 components are mixed up. I've compared my unit with the product pictures and also had a look at the designators on the silkscreen of the PCB. More is not always better, my PCBA has 2 LEDs mounted. One that is mounted where a resistor should be. Of course none of them works :) Also I found one resistor where a capacitor should be mounted. Also, the description says "Support 2G 3G 4G Network" but as far as I can tell this product only support 2G. I signed up for a 3G only SIM contract to use with this and that was a complete waste of my money.