
KH.WTU-V 4G Solar Telemetry Terminal RTU
Remote Data Acquisition and Wireless Transmission for Hydrology Environmental Monitoring and Agriculture
Product Introduction (pdf)
Product Introduction
The KH.WTU-V 4G Solar Telemetry Terminal RTU is a compact, highly integrated remote terminal unit designed for stable data acquisition, local storage, and wireless transmission in hydrology, environmental monitoring, meteorology, and agricultural observation systems. With robust solar power management and 4G connectivity, it supports long-term unattended outdoor operation, enabling seamless integration with IoT platforms and mobile monitoring applications.
By combining data collection, power management, and wireless communication in a single device, the KH.WTU-V significantly reduces system complexity and on-site installation workload. It ensures real-time data transmission over 4G networks, reliable remote management, and uninterrupted operation under harsh field conditions, making it ideal for distributed monitoring stations powered by solar energy.
Key Features
Highly Integrated RTU Design: Built-in 4G DTU, image acquisition module, solar charging controller, lightning protection, and core functional components, eliminating external modules.
Compact and Reliable Architecture: Space-saving and cost-effective, designed for stable long-term field deployment.
Wireless Networking Capability: Integrated RF module enables local wireless networking, reducing cabling and simplifying maintenance.
Solar Power Management System: Supports external solar battery charging with intelligent three-stage charging, power detection, and alarm functions.
Ultra-Low Power Consumption: Optimized for long-term unattended operation in remote or off-grid sites.
Comprehensive Protection Functions: Lightning protection, power monitoring, and abnormal operation alarms ensure system stability in harsh environments.
Application Scenarios
Reservoir water level and flood control monitoring stations
Mountain torrent and flash flood early warning systems
Urban waterlogging and drainage monitoring
Irrigation districts and agricultural field monitoring
Hydrological and oceanographic observation stations
Pumping stations, sluice gates, and hydropower facilities
Meteorological stations and soil moisture monitoring sites
Technical Parameters
| Parameter | Specification |
|---|---|
| Supply Voltage | 10–30 VDC |
| Multiplexing Interface | 1 channel (configurable RS485 / RS232) |
| Static Power Consumption | ≤1 mA (basic type, 12 V power supply) |
| Working Current | ≤6.5 mA (basic type, 12 V power supply) |
| RF Operating Frequency | 433 MHz (visible transmission distance up to 3 km) |
| Gray Code Input | 14-bit |
| Analog Input | 2 channels (4–20 mA) |
| Analog Acquisition Accuracy | 0.1% FS |
| Switch Input | 2 channels (low level valid) |
| Switching Output | 2 channels (12 V / 500 mA driving capability) |
| RS485 Interface | 2 channels (for digital sensors) |
| RS232 Interface | 2 channels |
| Clock Accuracy | Better than ±1 s/day |
| Operating Temperature | -45 to +70 ℃ |
| Storage Temperature | -45 to +80 ℃ |
| Ambient Humidity | <98% RH |
| MTBF | ≥50,000 hours |

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