[Introduction]:E840-DTU (GPRS-03) is the second digital radio product that supports data transmission launched by Ebaite, the product software has perfect functions, covering most conventional application scenarios, users only need to achieve two-way transparent data transmission from serial port to network server through simple settings. It is an industrial-grade quad-band GSM/GPRS data radio station.
[Transmission Type]:GPRS
[Power]:30~33dBm
[Size]: 84*82*25mm
[Interface]: RS485/RS232
[Weight]:136±5g
Value | Description |
---|---|
Support Band | Quad Band: GSM850, EGSM900, DCS1800, PCS1900 Module automatically searches for frequencies Band selection can be set by AT command Compliant with GSM Phase 2/2+ |
GPRS connection characteristic | GPRS multi-slot class 12 (default) GPRS multi-slot class 1~12 (configurable) GPRS mobile station class B |
GPRS data feature | GPRS data downstream transmission: up to 85.6kbps GPRS data upstream transmission: up to 85.6kbps Encoding format: CS-1, CS-2, CS-3 and CS-4 Support for PAP (Password Authentication Protocol) protocols commonly used for PPP connections Support is usually used for CHAP (Interrogation Handshake Authentication Protocol) protocol Embedded protocol: TCP/UDP/FTP/PPP/HTTP/NTP/MMS/SMTP/PING, etc. Support for unstructured supplementary data services (USSD) |
Value | Description |
---|---|
Antenna | SMA |
Data interface | RS485 / RS232 |
Baud rate | 1200bps ~115200bps,default:115200bps |
TX power | Class 4 (2W): GSM850 and EGSM900 Class 1 (1W): DCS1800 and PCS1900 |
AT command format | Ebyte general AT command |
3GPP frequency | 1 Timeslot | 2 Timeslot | 4 Timeslot |
---|---|---|---|
CS-1 | 9.05kbps | 18.1kbps | 36.2kbps |
CS-2 | 13.4kbps | 26.8kbps | 53.6kbps |
CS-3 | 15.6kbps | 31.2kbps | 62.4kbps |
CS-4 | 21.4kbps | 42.8kbps |
85.6kbps |