Industrial-grade 2G modem, Support dual frequency: GSM 900/1800MHz
Module: Siemens TC35I, USB interface, can be used to send SMS 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 with: any software supported AT commands, includes SMS Studio, SMS Caster, SMS deliverer.
Compatible system: Windows 2000/XP/7/8/8.1/10 or later versions (32 & 64-bit), Linux, Mac OS X, Android.