| Network |
|
| Standard |
GSM / GPRS |
| Rate |
14.4 Kbps ~ 57.6 Kbps |
| Standard Frequency Range |
850/900/1800/1900MHz |
| GPRS Multi-slot Class |
GPRS Class 10 |
| GPRS Terminal Device Class |
Class B |
| GPRS Coding Schemes |
CS1 ~ CS4 |
| Max Launch Power |
GSM900 class4 (2W), DCS1800 class1(1W) |
| Application |
GSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission |
| Network Protocol |
TCP, UDP, DNS, Http |
| Network Link Count |
4 |
| Disconnection Buffer |
4 x 15K bytes |
| Network Receive Buffer |
4K byte |
| Serial |
|
| Port Number |
2 (1*RS-232, 1*RS-485, can not work at the same time) |
| Interface Standard |
RS-232: DB9 cellular type, RS-485: 2 wire (A+, B-) |
| Data Bit |
5, 6, 7, 8 |
| Stop Bit |
1, 1.5, 2 |
| Check Bit |
None, Even, Odd |
| Baud Rate |
UART: 2400 bps ~ 921600 bps |
| Flow Control |
RTS/CTS |
| Receive Buffer |
4K byte |
| RS-485 Pull-up and Pull-down Resistor |
2.2 KΩ |
| Device Interface |
|
| Antenna Interface |
50Ω/SMA-K (female terminal) |
| SIM Card |
1.8V / 3V |
| Speech Interface |
Null |
| Software |
|
| Virtual Serial（USR-VCOM） |
Windows 2000 or higher (32 bit/64 bit) |
| Configuration |
Serial AT command, network AT command, SMS AT command |
| Basic Parameter |
|
| Size |
80x 84 x 25（mm） |
| Operating Temp. |
-25 ~ 85°C |
| Storage Temp. |
-40 ~ 125°C |
| Input Voltage |
DC 5 ~ 36 V |
| Working Current |
Average: 22 ~ 45mA, Max: 201mA |
| More |
|
| Warranty |
2 years |
| Accessory |
12V1A power, serial line, GPRS sucker antenna |
