Ebyte 4440-GPRS User Manual page 6

Wireless Data Transceiver
2. Introduction
E850-DTU (4440-GPRS) is a network IO product that supports 4 switch inputs (default dry
contact), 4 analog inputs, and 4 relay outputs. Support Modbus TCP/RTU protocol. The product is
highly easy to use and can be easily and quickly integrated into your system for GPRS-based remote
control.
2.1 Parameters
Wireless parameter
Hardware parameter
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Item
Standard frequency band
Size (H*W*D)
Weight
Working temperature
Storage temperature
Working humidity
Storage humidity
Working voltage
Current collection range
E850-DTU(4440-GPRS) datasheet
Description
850/900/1800/1900MHz
172*107*29mm
-
-20℃~+70℃
-40℃~+85℃
5%~95%
1%~95%
8V~28V
0mA~20mA
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