SIM900B 规格参数
| TCP | Yes |
| UDP | Yes |
| FTP | Yes |
| Data Rate (kbps) UL | 85.6 kbps |
| Size | 40x33mm |
| UART | 1 |
| Band | Quad |
| HTTP | Yes |
| RF Connector | Yes |
| SSL | Yes |
| eCALL | - |
| TCP | Yes |
| UDP | Yes |
| FTP | Yes |
| Data Rate (kbps) UL | 85.6 kbps |
| Size | 40x33mm |
| UART | 1 |
| Band | Quad |
| HTTP | Yes |
| RF Connector | Yes |
| SSL | Yes |
| eCALL | - |