Product Overview

The Wall-Mounted Temperature and Humidity Transmitter NKWS19 is designed for accurate indoor environmental monitoring in industrial, commercial, and building automation applications. Combining stable sensing performance with a compact wall-mounted design, it provides reliable temperature and humidity measurement for long-term operation.

The transmitter supports multiple signal outputs, including RS485 (Modbus RTU), 4–20 mA, and 0–10 VDC, allowing seamless integration with PLCs, BMS, HVAC systems, and industrial automation equipment. Users can choose either LCD display or non-display versions according to project requirements.

With configurable temperature ranges, high dust resistance, and IP65 protection, the NKWS19 Series is suitable for various indoor monitoring environments requiring stable temperature and humidity measurement.

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Product Features

• Accurate temperature and humidity monitoring
• Optional LCD display or non-display version
• Available outputs: RS485, 4–20 mA, or 0–10 VDC
• Standard Modbus RTU communication for RS485 models
• Adjustable temperature measurement range
• Excellent long-term stability
• Full-range temperature compensation
• Wide operating temperature range
• Wall-mounted installation with optional rail mounting
• High dust resistance
• IP65 protection rating
• Compact ABS engineering plastic housing

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Applications

Industries

• Building Automation
• HVAC Systems
• Healthcare Facilities
• Agriculture
• Industrial Manufacturing
• Environmental Monitoring

Typical Applications

• Pump rooms
• Equipment rooms
• Clean rooms
• Hospital wards
• Factory workshops
• Greenhouses
• Livestock breeding facilities
• Heating, ventilation, and air conditioning (HVAC)

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Technical Specifications

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Available Configurations

Display Options

• LCD Display
• Without Display

Output Options

• 4–20 mA
• RS485 (Modbus RTU)
• 0–10 VDC

Power Supply

• 12–24 VDC
• 24 VDC

Installation

• Wall-mounted (standard)
• Optional rail mounting

Temperature Range

• Configurable from -40°C to 125°C
• Factory default for analog output: -40°C to 100°C
• Digital output range: -40°C to 125°C

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Why Choose the NKWS19 Wall-Mounted Temperature and Humidity Transmitter?

Reliable environmental monitoring is essential for maintaining equipment performance, indoor comfort, and process stability. The NKWS19 combines accurate sensing technology with flexible output options to support a wide range of industrial and commercial monitoring applications.

Flexible Communication Options

Choose 4–20 mA, 0–10 VDC, or RS485 (Modbus RTU) outputs for easy integration with PLCs, HVAC controllers, BMS platforms, and industrial automation systems.

Stable Long-Term Performance

Excellent long-term stability and full-range temperature compensation help maintain measurement consistency over extended operating periods.

Easy Installation

The compact wall-mounted housing simplifies installation, while optional display versions allow local monitoring of temperature and humidity values.

Suitable for Various Indoor Applications

Designed for environmental monitoring in clean rooms, hospitals, equipment rooms, workshops, greenhouses, and HVAC systems.

Industrial Protection

The IP65 enclosure and high dust resistance help protect the transmitter in demanding indoor industrial environments.

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Application Case

Environmental Monitoring for HVAC and Equipment Rooms

Stable temperature and humidity are essential for maintaining the normal operation of HVAC systems and protecting electrical equipment installed in equipment rooms. The NKWS19 Wall-Mounted Temperature and Humidity Transmitter can be installed on interior walls to continuously monitor environmental conditions and provide real-time measurement data.

The transmitter measures ambient temperature and relative humidity and transmits the information through RS485, 4–20 mA, or 0–10 VDC outputs to a building management system (BMS), PLC, or HVAC controller. Facility operators can use the collected data to monitor indoor conditions, optimize ventilation, and maintain stable environmental parameters required for equipment operation.

With configurable temperature ranges, optional LCD display, and multiple communication methods, the NKWS19 provides a practical solution for indoor environmental monitoring in hospitals, clean rooms, industrial workshops, greenhouses, and commercial buildings.

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Installation Notes

• Install the transmitter in a location with adequate air circulation.
• Use shielded twisted-pair signal cables for improved communication stability.
• Ground the cable shield at the control cabinet end only to reduce electrical interference.
• Keep signal wiring separated from high-voltage power cables whenever possible.
• Select the appropriate output type and temperature range according to the application requirements.

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Frequently Asked Questions (FAQ)

1. What does the NKWS19 measure?

The NKWS19 measures ambient temperature and relative humidity for indoor environmental monitoring.

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2. Which output signals are available?

The transmitter supports:

• RS485 (Modbus RTU)
• 4–20 mA
• 0–10 VDC

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3. Is an LCD display available?

Yes. Both LCD display and non-display versions are available.

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4. What is the temperature measuring range?

The configurable measuring range is -40°C to 125°C. For analog output models, the factory default range is -40°C to 100°C.

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5. What applications is the NKWS19 suitable for?

Typical applications include HVAC systems, hospital wards, clean rooms, equipment rooms, factory workshops, greenhouses, and other indoor environmental monitoring locations.

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6. What communication protocol does the RS485 version use?

The RS485 model uses the Modbus RTU communication protocol.

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7. What protection rating does the transmitter have?

The NKWS19 has an IP65 protection rating for reliable operation in indoor industrial environments.

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8. Can customized configurations be provided?

Yes. Customized output signals, power supply options, temperature ranges, and other product configurations are available according to application requirements.

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Optional Services

• Customized product configurations
• Customized temperature ranges
• Customized output signals
• Installation and commissioning support
• Product customization based on site operating conditions

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Industries Served

The NKWS19 Series is suitable for a wide range of industries, including:

• Petroleum and Petrochemical
• Natural Gas
• Machinery Manufacturing
• Electric Power
• Metallurgy
• Building Materials
• Food Processing
• Pharmaceutical Manufacturing
• Agriculture
• Environmental Protection