... and gas fee, balance notice, etc.. New GSM modem for bulk sms sending TM100 Key words: GSM SMS Modem, GSM Modem, SMS Gateway Brief DescriptionsTM100 DTU is a wireless Data ... the stability of unit;With English SMS receiving, sending to one party or sending to multi parties;With access to data center ... , 9.6, 14.4Kbps;Data Fax: Group 3 Class 1;SIM Card: 1.8V, 3V;l InterfaceRS232: serial data rate of ...