M2M Solution
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    *Asia Only
    ~ Available soon ~


    RTU-540P-NB is is an intelligent Active LTE NB-IoT Remote Terminal Unit with GPS. Within the high performance 32 bit CPU, RTU-540P-NB is suit for the hard industrial environment. When connecting with NB-DA Server or MQTT Broker, the user can also control the devices which connected to RTU-540P-NB from the remote control center. It features LTE NB-IoT module, 6 digital inputs, 2 digital outputs, 1 analog input, 1 RS-232, 1 RS-485 and SD interface. It can be used in M2M application fields to transfer the local I/O, GPS and Modbus device's data via LTE NB-IoT by the defined period or DI/AI triggers. The local I/O and GPS data can also be stored in the SD card to become a remote data logger. It also supports Li-ion battery as another power source when the main power is failed temporarily. Therefore, RTU-540P-NB is an ideal solution for environmental monitoring, remote device management and vehicle monitoring system for M2M applications.

    • Support LTE NB-IoT B1/B3/B5/B8/B20/B28
    • Support Modbus RTU protocol to connect to Max 3 Modbus RTU devices via RS-485 port
    • Support MQTT
    • Support micro SD Card
    • Support GPS function
    • Built-in Watch-dog Function
    • Power Reverse Polarity Protection
    • Support 3.7V Li-ion Battery backup
    • Power supply +10 VDC ~ +30 VDC

    The NB-DA Server is a software with friendly graphic interface to collect data from ICP DAS IoT devices. It provides four interfaces—Modbus TCP, MQTT, Database, and RAM Disk (.csv file) to let user gets the data. Besides, user can use Modbus TCP command or publish MQTT message to control remote I/O. In the NB-DA Server, user can set multiple stations to collect data in different applications and every station can support 2000 devices online.

    Web site
    IoT Service Engine for ICP DAS products

    • Easy to establish NB-IoT applications
      With simple web utility, RTU-540P-NB can easily set the connection with NB-DA Server or MQTT Broker. By transmitting data to NB-DA Server, user can easily get the data by using Modbus TCP, MQTT, Database, or .csv file (in RAM Disk). If user wants to simply subscribe data from MQTT Broker, RTU-540P-NB can also publish data to any MQTT Broker.
    • Modbus RTU/TCP device connectivity
      RTU-540P-NB is built-in Modbus RTU protocol has RS-485 interface. That can make any Modbus RTU devices connect to RTU-540P-NB.
    • Simple remote local I/O control
      With NB-DA Server, user can use Modbus TCP command or publish MQTT message to update the local DO values on the server, and then the RTU-540P-NB will update Modbus devices’ local DO values automatically. When connecting with MQTT Broker, user can publish local DO message to the topic that subscribe by RTU-540P-NB. If RTU-540P-NB receives the control message, it will reply an ACK message to let the user know its success.
    CPU ARM Microprocessor
    WDT(watchdog) Yes
    LTE NB-IoT system
    Frequency Band
    LTE NB-IoT B1, B3, B5, B8, B20, B28
    Serial ports
    Utility port(COM1)

    RS-232: TxD, RxD, GND (use for device configuration and debug)

    COM2 RS-485: D+, D- (use for communication with other devices)
    Digital Input
    Input Channel 6
    Input Type Sink or Source, Isolated channel with common power or ground
    Off Voltage Level +1V max.
    On Voltage Level +3.5 ~ 30 VDC
    Isolated Voltage

    6 (5~40Hz), Min. Pulse Width : 25ms

    Digital Output
    Output Type

    Open-Collector (NPN) (100mA@30VDC)

    Load Voltage

    +30 V max

    Load Current
    100 mA max
    Isolated Voltage


    Analog Input
    12 bit
    Input Range/Type 0 ~ 20 mA
     GPS Interface
    Support Channels 32
    Sensitivity Tracking = up to -159 dBm (with external LNA)
    Cold start = up to -146 dBm (with external LNA)
    Acquisition Time Hot start (Open Sky) = 2 s(typical)
    Cold start (Open Sky) = 36 s(typical)
    Protocol Support GPRMC format (NMEA 0183 version 3.01)
    Protection Power reverse polarity protection
    Frame Ground Protection ESD, Surge, EFT, Hi-Pot
    Required Supply Voltage +10 VDC ~ +30 VDC
    NB-IoT Gateway:
    Data Collection and Remote Control (with NB-DA Server):
    Data Collection and Remote Control (with MQTT Broker):

    RTU-540P-NB CR
    LTE NB-IoT Remote Terminal Unit with GPS(RoHS) (Asia Only)
    For quotation ; For product information ; For project or solution discussion
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