Ebyte E840-DTU - 1.4 Pin definition

Chengdu Ebyte Electronic Technology Co.,Ltd E840-DTU(4G-02E) User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd
7
1.4 Pin definition
Pin No.
Name
Description
1
RS232
RS232 interface
2
485_A
To connect the end A of other RS485 device
3
485_B
To connect the end B of other RS485 device
4
GND
Ground
5
VCC
Power supply， 8~28V,12V or 24V is recommended
6
PWR
Power indicator
7
WORK
Blue: Receipt transceiver pin, when the network receives data or the serial port
receives data (50ms high/10ms low)
Green: device status indication pin, Low: The device is powered on to search for a
SIM card 1800ms low, 200ms high: The device checks the correct SIM card and is
attaching to the network; High: The device is attached to the network successfully;