Ebyte E840-DTU User Manual page 2

Version
1.00
E840-DTU (GPRS-01) is designed for the communication between UART and net server via GPRS. With easy AT setting, the dual
transparent transmission can be conducted.
This chapter focuses on the brief introduction of E840-DTU (GPRS-01). It explains how to make the simplest hardware environment
and test the transparent transmission of E840-DTU (GPRS-01). The transparent transmission is between UART devices（referring to PC）
and net sever (replaced by TCP testing tools).
Features
Quad-frequency: GSM850/900, DCS1800/1900, applied globally
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GSM/GPRS/EDGE and the 2G data of China Unicom and China mobile2G/3G/4G SIM card
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TCP and UDP transmission protocols
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Remote SMS parameter config
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UART AT command setting
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Simple commands are sent in Chinese or English via SMS which avoids the complication of Chinese message of PDU.
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Wide voltage band of 8-28V. Power supply of DC and terminal.
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RS485 circuit board features electric isolation, lightning protection, surge protection and anti-interference.
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Date
2017/12/6
Description
Initial version
2
Issued by
huaa