MLis MLB-G420 Series, User Manual

Page: 76 / 89

MLB-G420X Wireless Terminal User Manual 76 Rev 1.1
4 OPERATING NOTE
4.1 Power on the Modem
After plugin the power adapter, the modem is usually fully operational within 60 seconds, after
powering it up. Depending on the signal strength of the network in the area, logging into a network
may take longer and is outside the control of the modem.
4.2 Reset to default
Press reset button, it will be reset to default. All of temporary data buffer will be clear.
4.3 External input x2
External signal input source, positive signal are DI1 and DI2, negative signal are COM_1 are COM_2. Power input
range is +12V~+48V, it will be determined as positive. It can be used for alert.
4.4 External Relay x1
Non positive and negative signal relay output, maximum power input voltage range is with load voltage 40V and
maximum load current is 2.0A. It can be used for beeper.
4.5 DB9 Connector
The RS-232/422/485 connector is DB9 male type, please refer to table 4.
4.6 Install SIM card
Please turn to back view, screw open the cover, then user will see SIM card holder. Please use SIM card faces to
PCB board and put it into holder, please screw the cover back.