E840-DTU (GPRS-03) is an industrial grade quad-band GSM/GPRS digital radio.


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[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... Read more

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Categories: DTU/RTU, GPS/GSM module

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[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


[Size]: 84*82*25mm

[Interface]: RS485/RS232


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



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E840-DTU (GPRS-03) is an industrial grade quad-band GSM/GPRS digital radio.