Pin Definition; Quick Start; Device Preparation - Ebyte NB-IoT E840-DTU User Manual

NB-IoT DTU

1.4 Pin Definition

Pin No. Name
1 GND
2 VCC
3 RS232
4 485_A
5 485_B
6 ANT
7 PWR
8 WORK
9 NEL
10 NC
11 RST
12 DC8~28V
13 SIM
2.

Quick Start

2.1 Device Preparation

E840-DTU(NB-02)
Copyright ©2012–2017，Chengdu Ebyte Electronic Technology Co.,Ltd.
Ground electrode
Power supply，default: 8~28V
RS232 interface
Side A of external interface for other RS485 devices
Side B of external interface for other RS485 devices
Antenna interface（SMA-K，50Ω）
Power indicator
UART communication indicator
Net working indicator
N/A
Reset dial switch（down，reset）
Power adapter interface
SIM card slot
E840-DTU（NB-02）User Manual
Description
12V Power adaptor
5