Integrated Temperature Humidity and Atmospheric Pressure Sensor for Weather Stations
RS485 Modbus Weather Sensor for Smart Agriculture, Meteorological Monitoring and IoT Environmental Networks
Product Introduction (pdf)
Product Introduction
The KH.QX-3 Integrated Temperature Humidity and Atmospheric Pressure Sensor is a compact and high-precision weather sensor designed for continuous outdoor environmental monitoring, automatic weather stations, and smart agriculture applications.
By integrating temperature, relative humidity, and atmospheric pressure measurement into a single device, the sensor provides reliable multi-parameter atmospheric data for weather observation, agricultural climate monitoring, and environmental research.
The KH.QX-3 supports RS485 Modbus RTU communication, enabling seamless integration with weather stations, telemetry systems, SCADA platforms, and IoT-based environmental monitoring networks.
With a durable ASA engineering plastic housing and low-maintenance design, the sensor delivers stable performance under long-term outdoor deployment conditions, including agricultural fields, hydrological stations, and environmental observation sites.
How It Works
The integrated sensor uses precision electronic sensing elements to measure:
- Air temperature
- Relative humidity
- Atmospheric pressure
The collected environmental parameters are processed internally and transmitted through digital communication interfaces for remote monitoring and data analysis.
This integrated design provides:
- Multi-parameter environmental monitoring
- Reduced installation complexity
- Reliable real-time weather data
- Easy IoT system integration
Key Features
Integrated Temperature, Humidity and Pressure Measurement
Combines three essential weather parameters into one compact sensor, simplifying installation and reducing system complexity.
High-Precision Environmental Monitoring
Provides accurate atmospheric data for:
- Weather observation
- Agricultural climate analysis
- Environmental monitoring
Durable Outdoor Construction
The ASA engineering plastic housing provides excellent resistance against:
- UV exposure
- Outdoor weather conditions
- Corrosion and environmental aging
Maintenance-Free Sensor Design
The non-mechanical sensing structure ensures long-term stability with minimal maintenance requirements.
RS485 Modbus RTU Communication
Supports integration with:
- Automatic weather stations
- IoT telemetry systems
- SCADA platforms
- Environmental monitoring networks
Strong Anti-Interference Performance
Built-in watchdog and automatic reset functions improve system reliability during long-term outdoor operation.
Flexible Data Transmission Options
Optional communication interfaces and wireless modules support customized remote monitoring solutions.
Application Scenarios
Smart Agriculture Weather Monitoring
Used for:
- Precision farming
- Greenhouse climate monitoring
- Irrigation planning
- Agricultural weather networks
Automatic Weather Stations
Provides atmospheric data for:
- Meteorological observation
- Regional climate monitoring
- Weather research
Hydrological and Environmental Monitoring
Suitable for deployment in:
- Rivers
- Lakes
- Reservoirs
- Environmental observation stations
IoT Environmental Monitoring Networks
Integrates with telemetry stations, cloud platforms, and smart environmental management systems for remote data collection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Temperature Range | -40°C ~ +60°C |
| Temperature Accuracy | ±0.3°C |
| Relative Humidity Range | 0–100% RH |
| Humidity Accuracy | ±3% RH |
| Atmospheric Pressure Range | 300–1100 hPa |
| Pressure Accuracy | ±0.25% |
| Communication Interface | RS485 (MODBUS RTU) |
| Optional Interfaces | RS232 / USB / Ethernet |
| Power Consumption | ≤0.12 W |
| Update Interval | ≥1 minute |
| Housing Material | ASA Engineering Plastics |
| Operating Conditions | Outdoor, weather-resistant design |


