Industrial-grade 2G modem, Module: Siemens MC35I
Support dual frequency: GSM/GPRS 900/1800MHz
USB interface, Can be used to send SMS and MMS in bulk.
This modem is controlled on USB port via AT commands (GSM 07.07, 07.05), the USB port will be emulated to COM (serial / RS232) port.
Compatible system: Windows 2000/XP/7/8/8.1/10 or later versions (32 & 64-bit), Linux, Mac OS X, Android.