Specifications

4G LTE COMPACT INDUSTRIAL CELLULAR ROUTER_M330/M330-W - UM V1.1.8

UART (RS-232)

The port is a standard RS-232 signal level interface.

Signal

Direction

TXD

Transmit Data

Output

RXD

Receive Data

Input

GND

Signal Ground



Install the SIM Card

Insert and Remove SIM Card

(1) Before inserting or removing the SIM card, ensure that the power has been turned off and

the power connector has been removed from Cellular Router.

(2) Insert the SIM card with right direction. Push the SIM card in to the slot, and lightly press it

to lock it in the slot.

(3) To remove the SIM card, lightly press the SIM card, and it will pop out.