M590E GSM GPRS Module 900m-1800m Sms The Message Diy kits M590 Sms CPU MCU

This Module is a standard AT instruction set
Support at 900M-1800M, GSM frequency band
Can be connected: MCU for TTL
If you need datashee, please leave the mailbox, I will send mail to you.
If you test after ,no TCP connection,Please try to send:AT+XISP=0
Voltage:5v
Vurrent:1A
Frequency:900/1800
Size50mm*50mm