SMS modem is connected to computer or other device through USB interface and sends and receives text messages over the GSM network.Built-in wireless 2g module can insert into 32 SIM cards to send and receive sms in bulk.
The linked product is a 2G Modem,At present, some countries or regions have closed 2G GSM. Before purchasing, please confirm that still using GSM in your region, otherwise you will not be able to use it.
The countries that have confirmed the cessation of GSM include:Australia, South Korea, Japan, United States, Canada (unable to use)Please contact customer service to recommend 3G or 4G products for you (For example,4G module:EC25)
GPRS Multi-slot Classes 1~12(default is Class 12),GPRS format CS-1,CS-2,CS-3,CS-4 PPP/PAP TCP/UDP/FTP/PPP/HTTP/NTP/MMS/SMTP/PING/MQTT
Frequency
GSM Full frequency: 850,900,1800,1900Mhz (Applicable to global GSM frequency bands)
Operating System
Win all, Linux, android
SIM interface
2FF Mini SIM (15mm*25mm) and 1FF (big size IC card)
Working voltage
DC 5V
TTL voltage
DC 3.3V
OEM / ODM
Bulk Customization
Warranty
One Year
SMS modem is a type of modem specifically designed for sending and receiving text messages. It can be connected to a computer or other device through a serial interface and send and receive text messages through the GSM network.
They are widely used in various automation systems, remote monitoring, alarm systems, and other fields to achieve remote communication and data transmission.