Louvered Multi-Parameter Environmental Sensor with RS485 Modbus

Configurable environmental measurement: Select temperature, humidity, barometric pressure, CO₂, PM2.5, PM10, PM100/TSP, illumination, environmental noise, wind speed and wind direction according to project requirements.
Louvered radiation shield: The ventilated, multi-layer housing helps reduce direct solar radiation effects while allowing surrounding air to reach the sensing elements.
RS485 Modbus communication: Connect the sensor to compatible data loggers, RTUs, PLCs and industrial monitoring systems.
Alternative signal outputs: RS232, 4–20 mA, 0–20 mA and voltage output options are available for different integration requirements.
Flexible sensor combinations: Supports configurations ranging from basic temperature and humidity monitoring to more comprehensive environmental monitoring.
Compact mechanical integration: Multiple selected environmental measurement functions are combined within one assembly, reducing the need for separate sensor housings.
Outdoor-oriented enclosure: UV-resistant and anti-aging materials are used in the louvered shield, with IP54 protection.
Optional wind monitoring: An integrated wind speed and direction module can be combined with the radiation shield for additional meteorological measurements.

Product Description

Product Overview

The JW-BYX-D Louvered Multi-Parameter Environmental Sensor is a configurable sensing device designed for environmental data collection in outdoor monitoring networks, smart agriculture, ecological monitoring and industrial IoT applications.

Unlike integrated weather stations with a predetermined combination of meteorological parameters, the JW-BYX-D allows users to select measurement functions based on their monitoring objectives.

Available parameters include air temperature, relative humidity, atmospheric pressure, carbon dioxide (CO₂), particulate matter, light intensity, environmental noise, wind speed and wind direction.

The sensor uses a multi-layer louvered radiation shield to help protect selected sensing elements from direct sunlight and surrounding environmental exposure while maintaining ventilation.

With an RS485 interface and Modbus communication, the JW-BYX-D can transmit measurements to compatible data acquisition equipment for further recording, analysis and remote transmission.

It is particularly suitable for system integrators looking for a configurable environmental sensor rather than a fixed-function weather station.

1. How Does the Louvered Radiation Shield Work?

The radiation shield is an important component of the JW-BYX-D environmental sensor.

Direct sunlight can heat an exposed temperature sensor above the temperature of the surrounding air. Radiation from nearby surfaces can also influence measurements.

The JW-BYX-D uses a louvered housing designed to reduce these effects while allowing natural airflow through the sensor assembly.

Multi-Layer Ventilation Structure

The radiation shield incorporates circular, layered louvers with a nominal outer diameter of 140 mm.

Its structural design allows air to enter from different directions, supporting measurements of the surrounding environment.

The shield material incorporates ultraviolet-resistant and anti-aging additives intended for prolonged outdoor exposure.

The structure also provides a degree of protection against direct rain and other environmental influences.

Selectable Shield Configuration

Different sensing combinations may require different internal space and housing arrangements.

For example, configurations incorporating CO₂ or particulate matter measurement require a larger shield assembly than basic temperature and humidity configurations.

The appropriate shield arrangement should be selected according to the sensor modules installed.

Why this matters: A suitable radiation shield supports more representative outdoor temperature and humidity observations, especially at sites exposed to direct sunlight.

However, installation conditions, airflow, nearby heat sources and sensor calibration can still influence measurement quality.

2. Configurable Environmental Measurement Parameters

The JW-BYX-D supports different sensor combinations for projects with varying data requirements.

Air Temperature and Relative Humidity

Temperature and humidity monitoring can be used in agricultural environments, outdoor monitoring stations, ecological research locations and distributed IoT networks.

The sensors are housed within the ventilated radiation shield to reduce direct solar heating effects.

Barometric Pressure

Atmospheric pressure measurement provides additional meteorological context for environmental monitoring systems.

Pressure measurements can be combined with temperature, humidity and wind data when more comprehensive weather observations are required.

Carbon Dioxide Monitoring

An optional CO₂ module measures ambient carbon dioxide concentration.

This parameter may be useful in greenhouse environmental assessment and selected ventilation-related monitoring applications.

CO₂ measurements should be interpreted according to installation conditions and application requirements.

Particulate Matter Monitoring

Optional particulate matter measurement includes:

PM2.5
PM10
PM100/TSP

These measurements provide information about airborne particle concentrations and can support dust trend observation and general environmental monitoring.

The sensor should not be described as a regulatory reference-grade air quality monitoring instrument without supporting validation.

Illumination and Environmental Noise

Illumination measurement can provide supplementary information about local light conditions.

An optional noise module measures environmental sound levels in dB(A), supporting monitoring activities around roads, campuses, parks and selected industrial locations.

Wind Speed and Wind Direction

An optional integrated wind sensor can be installed with the shield assembly.

This enables wind measurements to be collected together with the configured environmental parameters.

The actual wind measurement range depends on the selected digital or analog output configuration.

3. Technical Specifications

Available Measurement Parameters

Parameter	Measurement Range	Accuracy
Air temperature — analog	−20 to +50°C	±0.3°C standard; ±0.2°C high-accuracy option
Air temperature — digital	−40 to +100°C	±0.3°C standard; ±0.2°C high-accuracy option
Relative humidity	0–100% RH	±3% RH standard; ±1.8% RH high-accuracy option
Atmospheric pressure	300–1100 hPa	±1 hPa at 25°C
CO₂	0–5000 ppm	±(50 ppm + 5%)
PM2.5 / PM10	0–500 μg/m³	Manufacturer-listed tolerance: ±30 μg/m³ / ±20%
PM100 / TSP	0–20,000 μg/m³	Manufacturer-listed tolerance: ±30 μg/m³ / ±20%
Outdoor illumination	0–200,000 lux	±4%
Indoor illumination	0–65,535 lux	±4%
Environmental noise	30–130 dB(A)	±3 dB(A)
Wind speed — analog	0–45 m/s	±(0.3 + 0.03V) m/s
Wind speed — digital	0–70 m/s	±(0.3 + 0.03V) m/s
Wind direction	0–359°	±3°

V represents the measured wind speed in m/s.

Configuration note: All parameters are available measurement options, not standard functions supplied in every unit. Measurement ranges and accuracy values must be checked against the selected JW-BYX-D configuration.

Electrical and Mechanical Specifications

Item	Specification
Model	JW-BYX-D
Product type	Configurable louvered environmental sensor
Radiation shield	Multi-layer, naturally ventilated
Shield outer diameter	140 mm
Communication	RS485 / RS232
Digital protocol	Modbus; ASCII option
Analog outputs	4–20 mA, 0–20 mA, 0–5 V, 1–5 V, 0–2.5 V
Maximum analog channels	4
Wind speed pulse output	Available for applicable configuration
Power supply	DC 5 V or DC 9–30 V, depending on configuration
Operating temperature	−20 to +60°C
Operating humidity	Up to 100% RH, non-condensing
Protection rating	IP54
Cable length	2 m standard
Mounting	Bent mounting bracket; optional U-shaped flange

Important: The sensor’s operating temperature range is different from the measurement range of its temperature module. The wider measurement range does not mean that every fully assembled configuration can operate continuously at those extremes.Specifications adapted from the reference product’s published technical information. Final JW-BYX-D specifications should be verified before commercial release.

4. RS485 Modbus and Analog Signal Integration

The JW-BYX-D is designed for connection to existing industrial monitoring and data acquisition systems.

RS485 Modbus Communication

An RS485 Modbus configuration allows a compatible controller or data logger to request environmental measurements from the sensor.

A typical monitoring system may include:

JW-BYX-D Environmental SensorConfigured measurement parameters

RS485 Modbus

Data Logger / RTU / PLCData acquisition and communication

Via compatible gateway or network connection

Monitoring Platform / SCADAData visualization, storage and analysis

The sensor supplies measurement data. Functions such as cellular transmission, cloud storage, dashboards and alarms require compatible external equipment or software.

For remote monitoring projects, explore JW-IoT’s Industrial LoRaWAN DTU for relevant RS485/RS232 integration options.

Analog Output Options

For systems using analog input modules, the JW-BYX-D also offers selectable current and voltage signal output configurations.

Available output types include:

4–20 mA
0–20 mA
0–5 V
1–5 V
0–2.5 V

Up to four analog output channels can be configured within one shield assembly.

Where more parameters must be collected through a single interface, a digital RS485 configuration may be more appropriate.

The required output interface should be specified before ordering.

5. Typical Applications

Smart Agriculture and Greenhouse Environmental Monitoring

The JW-BYX-D can be configured to measure temperature, relative humidity, light intensity and CO₂ to provide environmental information for greenhouse management or agricultural monitoring.

Different parameter combinations can be selected for field conditions and greenhouse environments.

For projects involving additional meteorological measurements, explore JW-IoT’s Low-Power Micro Automatic Weather Station for Smart Agriculture.

Urban Microclimate Observation

Local environmental conditions can vary considerably between parks, residential areas, campuses and heavily developed urban locations.

The JW-BYX-D can provide selected environmental measurements at distributed monitoring points.

Its modular configuration enables project teams to select the parameters needed without requiring every location to use an identical sensor combination.

For a fixed six-parameter alternative, see the Six-in-One Environmental Sensor for Smart City Air Quality Monitoring.

Industrial Environmental Monitoring

Manufacturing facilities, industrial parks and equipment installations may require environmental data for site assessment or routine observation.

Depending on the application, the JW-BYX-D can be configured for temperature, humidity, pressure, particulates or noise measurements.

Its selectable electrical outputs allow integration into compatible industrial acquisition systems.

Ecological and Campus Monitoring Networks

The sensor is also suitable for projects that require consistent environmental data collection across multiple locations, such as:

University campuses and educational monitoring sites
Parks and scenic areas
Ecological observation locations
Distributed urban environmental monitoring points

Parameter selection and installation practices should match the project’s monitoring objectives.

6. Installation Considerations

Proper installation is important for obtaining representative environmental measurements.

Sensor Location

Choose a location with sufficient natural airflow around the radiation shield.

Avoid positioning the sensor immediately beside heat sources, exhaust outlets, machinery or large surfaces that may influence local temperature.

Locations directly exposed to splashing water or irrigation spray should also be avoided.

Mounting Configuration

The standard mounting configuration uses a bent mounting bracket.

An optional U-shaped flange is available for installations requiring a different mounting arrangement.

Where an integrated wind sensor is selected, verify the mounting arrangement, mechanical clearance and orientation requirements.

Some combinations of wind and illumination sensing may require the illumination sensor to be mounted separately.

Electrical Connection

Select the power supply and communication interface according to the ordered configuration.

Confirm wiring polarity and signal assignment using the supplied documentation before connecting the device.

For RS485 applications, ensure that the connected equipment uses compatible Modbus communication settings.

Environmental Protection

The JW-BYX-D has an IP54 enclosure rating.

Installation planning should account for site exposure, cable routing and conditions such as persistent water spray, flooding, icing or corrosive environments.

Additional protection or a different enclosure design may be necessary for demanding locations.

7. How to Select the Right JW-BYX-D Configuration

The JW-BYX-D is intended to support project-specific sensor combinations rather than a single fixed set of measurement parameters.

Monitoring Requirement	Suggested Parameter Combination
Basic outdoor climate observation	Temperature + humidity
Weather-related environmental monitoring	Temperature + humidity + pressure
Greenhouse environmental assessment	Temperature + humidity + illumination + CO₂
Urban environmental observation	Temperature + humidity + PM2.5 + PM10 + noise
Site microclimate monitoring	Temperature + humidity + wind speed + wind direction
Extended environmental monitoring	Selected meteorological parameters + particulate matter or CO₂

These are suggested combinations for project planning, not standardized product variants.

Final compatibility, shield size, power requirements and output availability should be confirmed before ordering.

8. Request a Configured Environmental Sensor

The JW-BYX-D Louvered Multi-Parameter Environmental Sensor provides a configurable solution for projects that require multiple environmental measurements within a compact, ventilated sensing assembly.

With selectable measurement parameters, RS485 Modbus communication and alternative analog outputs, it can be adapted to different monitoring architectures.

For quotation or technical configuration support, please specify:

Required environmental parameters
Preferred communication interface
Power supply requirements
Installation environment and mounting method
Project quantity and integration requirements

Contact JW-IoT to discuss a JW-BYX-D configuration for your environmental monitoring project.

FAQ

Q

1. What is a louvered multi-parameter environmental sensor?

A

A louvered multi-parameter environmental sensor combines selectable environmental measurement modules with a ventilated radiation shield. The housing helps reduce direct solar heating effects while allowing surrounding air to reach the internal sensing elements.
Q

2.Does the JW-BYX-D include every listed measurement parameter?

A

No. The JW-BYX-D is configurable. Customers select the measurement parameters needed for their applications, and the final combination determines the supplied sensor configuration.
Q

3. What is the difference between JW-BYX-D and a compact weather station?

A

The JW-BYX-D emphasizes configurable environmental measurement within a louvered shield and selectable signal outputs. Compact weather stations may instead be designed around a particular fixed combination of meteorological parameters.
Q

4. Can JW-BYX-D communicate with a PLC or data logger?

A

Yes. An appropriately configured RS485 Modbus or analog output version can communicate with compatible industrial equipment. Integration depends on the communication settings, electrical requirements and controller capabilities.
Q

5. Can the sensor measure PM2.5 and CO₂ simultaneously?

A

The reference design supports configurations combining particulate matter and CO₂ modules. These combinations require the appropriate shield assembly and should be confirmed when specifying the JW-BYX-D.
Q

6. Is the sensor suitable for permanent outdoor installation?

A

It is designed for outdoor environmental monitoring and has an IP54 protection rating. Suitability depends on the exposure conditions, installation method and maintenance requirements at the project site.
Q

7. Does the JW-BYX-D include wireless communication?

A

Wireless communication is not specified as an integrated function. Remote transmission can be implemented through a compatible external RTU, gateway or data communication device.
Q

8. Can the sensor be customized for OEM projects?

A

The selectable measurement modules, communication interfaces and mounting options provide a basis for project-specific configuration. Additional OEM requirements should be reviewed for technical and commercial feasibility.