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The RTU-X is a robust electronic device that features digital inputs and outputs, analog inputs, a variety of built-in communication interfaces and protocols, and local programming capability.

It is an ideal product for implementing monitoring, acquisition, and control applications, integrating with an infinite number of sensors, actuators, and IoT platforms.

First time with the RTU-X

If this is the first time you are using the device, we recommend visiting the First Steps section.

The device's technical characteristics are described below.

Power supply​

PowerDetails
Voltage
  • VAC module: 90-264 VAC, 47-63 Hz, EMC compliant with EN61000-3-2 Class A
  • VDC module: connection to an external 8-12 VDC source
  • Solar module: direct connection to a solar panel with 18V nominal voltage
Battery

Internal 3.7V Li-Ion battery

  • IP68 model: 20,000mAh
  • DIN model: 3,750mAh
Consumption

Normal operation = 120mA

Low power = 200uA

Battery life for different scenarios can be checked here

Inputs and outputs​

Input/OutputDetails
Digital inputs
  • IP68 model: 2 dry-contact digital inputs
  • DIN model: 8 dry-contact digital inputs

Expandable via expansion modules

Digital outputs
  • IP68 model: 1 optoisolated digital output
  • DIN model: 8 optoisolated digital outputs

Maximum voltage 300V. Maximum current 100mA
Expandable via expansion modules

Analog inputs

2 configurable 12-bit analog inputs, 0-10V or 0-20mA.

0 - 10V. Input resistance > 1 MOhm. Error < 0.05% FS

0 - 20mA. Input resistance = 100 Ohm. Error < 0.1% FS

Power outputInternally generated 12V or 24V DC power, with capacity up to 1A@12VDC or 0.5A@24VDC

Communication interfaces​

InterfaceDetails
WiFi802.11 b/g/n
Ethernet10BASE-T available by default on the DIN model
BluetoothBLE v4.2
Cellular modem

NBIOT Modules

  • Quectel BG95-M3:
    • Cat M1 - B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B27 / B28 / B66 / B85
    • NB-IoT - B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B28 / B66 / B71 / B85
    • EGPRS - 850/900/1800/1900 MHz

LTE Modules

  • Quectel EG91-AUX:
    • LTE - B1 / B2 / B3 / B4 / B5 / B7 / B8 / B28 / B66
    • WCDMA - B1 / B2 / B5 / B8
    • GSM - B2 / B3 / B5 / B8
  • Quectel EG915U:
    • LTE - B2 / B3 / B4 / B5 / B7 / B8 / B28 / B66
    • GSM - B2 / B3 / B5 / B8
Lora
  • LoraWan classes A and C
  • US915 and AU915 frequency bands (contact us for other options)

The device has an SMA connector for an external antenna, which can optionally be used for the cellular modem, the Lora module, and the WiFi and Bluetooth interfaces.

Communication protocols​

ProtocolDetails
MQTT(S)JSON, Ultra light 2.0, and Predix packets. TLS encryption.
Modbus

Modbus TCP.

Modbus RTU over RS-485 (with expansion module).

Master of up to 16 devices, or slave.

NTPTime synchronization via Network Time Protocol
SDI-12 SDI-12 interface version 1.4

Software​

FunctionDetails
ScriptLocal programming capability in a C-like language that allows control over every aspect of the device.
LogInternal non-volatile memory to store up to 200,000 time-stamped variables.
FOTASecure remote updates.

Physical characteristics​

CharacteristicDetails
Enclosure
  • IP68 model: ABS plastic, IP68
  • DIN model: ABS plastic, DIN rail mount
Dimensions
  • IP68 model: 145 x 95 x 90 mm
  • DIN model: 103 x 87 x 58 mm
Weight490g
Operating temperature-30ºC to 60ºC

Expansion modules​

Up to 2 expansion modules can be added.\

ModuleDetails
Digital input expansion
(DIN Module)		3 dry-contact digital inputs
Digital output expansion
(DOUT Module)

3 optoisolated digital outputs.

Maximum voltage 300V. Maximum current 100mA

Analog input expansion
(AIN Module)

3 configurable 12-bit analog inputs:

  • 0 - 10V. Input resistance > 1 MOhm. Error < 0.05% FS
  • 0 - 20mA. Input resistance = 100 Ohm. Error < 0.1% FS
RS-485
(RS-485 Module)		Modbus RTU master or slave
SDI-12
(SDI-12 Module)		SDI-12 for connecting external sensors
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