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Cellular RTU(RTU200)
Cellular RTU(RTU200)

Cellular RTU(RTU200)

  • Network SupportIndustrial grade 4G module
  • ModelRTU200
  • VoltageDC 5-36V
  • Interface2 RS232 and 1 RS485 (or RS422) interface, built-in 15KV ESD protection
  • BrandKEY-IOT
  • Dimensions154mm* 73.6mm* 27.9mm
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The SeRTU200 Telemetry Terminal is a versatile multi-functional device designed for efficient data collection and communication. Developed by XIAMEN KEY-IOT TECHNOLOGY CO., LTD, this innovative RTU integrates various communication protocols like 4G/NB-IoT and LoRa, elevating remote monitoring and control to new heights.

Unveiling the SeRTU200's Capabilities

Flexible Networking, Plug and Play

The SeRTU200 is purpose-built for convenience with a plug-and-play design. It requires no wiring, making networking effortless. The RTU is equipped with multiple serial interfaces, including RS232 and RS485, enabling seamless connections to a wide range of devices and sensors. For wired networks, it also supports Gigabit Ethernet ports.

Powerful Data Handling and Acquisition

The device features a rich set of interfaces for efficient data handling. This includes multiple analog and digital inputs, allowing the collection and processing of diverse environmental and industrial data. Additionally, the RTU can capture multi-channel images and support remote queries of local data.

Advanced Wireless Communication

At the core of the SeRTU200's capabilities is a robust 4G LTE modem, ensuring dependable cellular connectivity. The RTU is designed to support various SIM cards, enabling seamless data transmission across extensive locations. The integrated GPS functionality adds further value for applications requiring precise location tracking.

Edge Computing and Local Decision Making

Edge computing capabilities empower the SeRTU200 to process and analyze data locally. This feature not only reduces network traffic but also enables timely decision-making based on real-time insights. The RTU can also support remote queries and upgrades, ensuring enhanced efficiency.

Rugged and Reliable Design

The SeRTU200 is engineered to withstand the challenges of industrial environments. Its enclosure is rated IP30, ensuring protection against environmental stresses. The RTU can operate efficiently within a wide temperature range and features resistance to shock, vibration, and moisture.

SeRTU200's Application Scenarios

Environmental Monitoring

The SeRTU200 plays a critical role in ecological environment monitoring and pollution source tracking. It efficiently gathers data on rainfall, water levels, water flow, water quality, and other critical parameters.

Renewable Energy Management

For renewable energy applications, the RTU becomes an invaluable asset. It monitors and manages energy systems, providing insights for efficient operations and maintenance.

Industrial Asset Monitoring

In industrial settings, the SeRTU200 facilitates real-time monitoring and control of machinery, enabling predictive maintenance practices and enhanced operational effectiveness. Its data collection and transmission capabilities are invaluable for tracking asset performance.


The SeRTU200 Telemetry Terminal, crafted with precision by XIAMEN KEY-IOT TECHNOLOGY CO., LTD, is a cutting-edge solution purpose-built for remote monitoring and control applications. Its flexibility, robust design, and advanced features make it an ideal choice for managing distributed assets. By harnessing cellular and wireless communication technologies, the RTU ensures businesses stay connected, informed, and efficient.
The SeRTU200's versatility and reliability position it as a key enabler for digital transformation, simplifying complex scenarios and unlocking new possibilities.
To gain further insights into this innovative device, refer to the detailed technical specification document available on our website. There, you will explore the SeRTU200's full potential and discover how it can elevate your projects to new heights.

Hardware Specifications Parameter Details
Industrial Serial Interface 2*RS232,2*RS485
RTC Supported
Hardware Watchdog Supported
Ground Terminal M4 screw grounding protection terminal
Gigabit Ethernet 1 Gigabit Ethernet port
4G Module PCIE interface, USB2.0 signal



Interface Requirements

4-channel analog input interface (12-bit AD, supports 4-20mA current signal input, optional 0-5V voltage signal input)
  2-channel digital input interface (opto-isolated)

Logic 0: Wet node 0-3VDC or dry node conduction

Logic 1: Wet node 5-30DC, or dry node open

  2-channel relay output interface

Maximum switching voltage:30VDC/220VAC

Maximum switching current: 4A

Maximum switching power:120W/880VA

  4-channel controlled output power supply (the output voltage is the same as the device power supply voltage, default 12V. The rated output current for a single channel is 1A, and the total rated output current for 4 channels is 2A, with built-in overcurrent protection)
  1 tipping bucket rain gauge interface
Antenna Standard SMA female antenna interface, characteristic impedance 50 ohms
SIM card slot 1 drawer-type SIM card slot, supports 1.8W/3V SIM/UIM card
Indicators 1 PWR light, 1 SYS light, 1 online light, 3 signal strength lights
RESET button 1
Wake-up button Universal touch switch
Power voltage DC 5-36V
Power interface 1.industrial terminal interface, with built-in power reverse protection and overcurrent/overvoltage protection

2. power inputs, software can detect whether the power is in place

Power switch Standard boat-shaped switch
Temperature Storage temperature -40°C 85°C, operating temperature -35°C75°C
Humidity Operating 5%-90% (non-condensing)
Certification Complies with CCC, RoHS
Fan design Fanless silent design
Protection level IP30
Rail Supports, desktop
Dimensions Length*width*height:154mm* 73.6mm* 27.9mm(excluding antenna mounting accessories)

Product Interfaces

Product Dimensions





Q & A

Shipping Time and Logistics

We have a large stock of products readily available, and we can typically ship orders within 1-3 business days. For customized products, the shipping time may vary depending on the specific requirements, but it generally takes around 2-4 weeks. We collaborate with several renowned logistics companies, offering a variety of express delivery options such as SF Express, EMS, and DHL to ensure timely and secure product delivery.

Custom Development Services

In addition to our standard products, we also offer custom development services to our clients. Whether you have any special feature requirements or application scenarios, our experienced engineering team can provide customized development and optimization based on your needs. The customization process typically takes 1-3 months, and we work closely with you to ensure that the final delivered product fully meets your requirements.

Product Warranty and After-sales Service

All our products undergo rigorous testing and come with a 1-year warranty. If any quality issues arise during the warranty period, we provide free repair or replacement services. Beyond the warranty period, we also offer long-term technical support and maintenance services. Customers can contact our after-sales team via phone, email, or other channels, and we will respond promptly and provide solutions.




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