Description: Spectrum SM5100B GSM/GPRS module is a miniature, single-side board, quad-band GSM 850/EGSM 900/DCS 1800/PCS 1900 module, ready for integration in various kinds of Fix wireless phones and other wireless devices.
There are two different SM5100B: the DTU version and the AT mode. The one y..
Description: The SM5100B GPRS-DTU supports both original SM5100B's AT command and DTU mode.Difference between Spectrum SM5100B four band GSM/GPRS Modem Module and SM5100B Four Bands GPRS DTU Version.SM5100B Four band GSM/GPRS version only supports AT commands, host uses AT commands to dial a number,..