voltage:5v
current:1A
frequency:900/1800
size50mm*50mm
If you test after ,no TCP connection,Please try to send:AT+XISP=0
the chip is old
1 X M590E GSM GPRS DIY
Unit Type:piece
Package Weight:0.01kg (0.02lb.)
Package Size:5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)