Spec:
-Working temperature 30 ℃ to + 80 ℃;
-standby average current under three ma;
-support GSM/GPRS four frequencies, including 850900180, 0190 MHZ;
-< sensitivity - 105;
-support voice calls;
-support SMS messages;
-support GPRS data service, maximum data rate, download 85.6 Kbps, 42.8 Kbps uploading;
-support standard GSM07.07, 07.05 the AT command and the expansion of Ai Thinker;
-support two serial interface, a download a serial port, a mouth AT commands;
-command support standard ats and TCP/IP interface;
-support digital and analog audio, audio support HR, FR, EFR, AMR speech coding;
-support 2 g, 3 g 4 g mobile card unicom card
-support the ROHS, FCC, CE, CTA certification;
-42 pin SMT packaging;