Quick Start Guide
MTX-4G-JAVA-IoT (AUS) as SMS Alarm
MTX Modems, Routers and Gateways
Distributed by: Australis M2M Pty Ltd
ABN: 43 626 409 489
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mtx 4g java iot aus sms alarm quick start guide 202102rv01
Digital Inputs/Outputs
The unit has:
a) 2 opto-isolated digital inputs (dry contact) short to ground to activate
b) 1 additional digital input activated by applying a voltage > 3VDC
c) 2 digital outputs, open collector
Digital IO Schematic for IN1,2 and OUT1,2
Suggested
Connection
Dry/voltage free
contact
Output relay
Max. Voltage 35VDC
Max. Current 80mA
Analogue Inputs
The units have 2 analogue inputs that can be used to trigger SMS alarms and/or output control.
Both ADC inputs have a resolution of 10 bits, which means that the default resolution is 48.8mV (0-
50V). After allowing for gain, reference voltage etc the effective accuracy of the analogue inputs is
±0.4% of full range (0-50V). Analogue inputs can be set to current mode by turning DIP switches 7
and/or 8 to ON.
Modbus Inputs
The unit can read Modbus registers from attached devices and use the values from the Modbus
registers to trigger SMS alarms and/or output control. These functions are not covered by this manual,
contact Australis M2M for assistance.
