[Transmission Type]：GPRS

[Power]：30~33dBm

[Size]： 84*82*25mm

[Interface]： RS485/RS232

[Weight]：136±5g

[Introduction]：E840-DTU (GPRS-03) is a product developed for serial port devices and network servers to transmit data through each other through the network. This product uses the standard AT command, which enables transparent transmission between devices and servers. The cloud platform built by Ebyte can realize the free networking mode.