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  • WiFi Temperature Humidity Sensor for use with MQTT
  • Industrial Grade with a Sensor Resolution of ±4%RH ±0.5°C
  • Environmental operating range is -40°C to 85°C
  • This device uses a 2.4GHz WiFi Communication Module
  • Plug-and-Play Setup Only Requires WiFi and MQTT Credentials
  • SoftAP Web-Page Configuration of Settings
  • Encrypted Communications Between Sensor and WiFi Connection
  • Supports IEEE-802.11B/G/N WiFi Protocols
  • Supports WPA/WPA2/WPA2-Enterprise WiFi Security Protocols
  • Supports DHCP or Static IP Managed Wireless Networks
  • Automatically Report to MQTT with Zero Setup
  • Transmits Sensor Data to MQTT Broker
  • Sensor data reported to MQTT Broker in easy to use JSON Format
  • Externally Powered Using a 6-32VDC Power Supply
  • NO Monthly Fee or Locked Proprietary Protocols


SKU: PR58-1_MQTT UPC: 689860072244 Categories: , , ,


WiFi Temperature Humidity Sensor for MQTT

NCD set out to build the world’s best WiFi Temperature Humidity Sensor for MQTT. In doing so, NCD now incorporates a precision Honeywell® temperature and humidity sensor with a WiFi module and control board. The temperature and humidity data collected from the environment around the sensor will be transmitted in beacons of high-accuracy (±4%RH and ±0.5°C). The on-board temperature humidity Honeywell® sensor is rated for -40°C to 85°C or -40°F to 185°F making it a viable product for most applications. 

This WiFi Temperature Humidity Sensor for MQTT was developed to work with any MQTT Broker. As one of the world’s most popular IoT protocols, MQTT is an essential, easy to use tool for viewing data from a wireless sensor device. Therefore, connectivity of the NCD ecosystem of IoT wireless sensors remains a top priority for the NCD engineering team.

When it comes to temperature and humidity sensing, nothing compares to the ease of use, low price, high accuracy, operational temperature range, or security features we at NCD have to offer. Note that this sensor will need to be externally powered and is capable of using a 6-32VDC power supply. 

To begin, access the product user guide under resources to learn how to use MQTT and this sensor in conjunction.

WiFi Temperature Humidity Sensor for MQTT


  • In-House Temperature Humidity monitoring
  • Storage Unit Weather Monitoring System
  • Warehouse Temperature Humidity Monitoring System
  • Real Time Temperature Humidity Data
  • Temperature Humidity Sensor for Device Control Applications
  • Wireless Temperature Humidity Monitoring for MQTT

Monitor Temperature & Humidity with MQTT.fx

MQTT.fx is an application that can stream sensor data from a MQTT Broker. This simple feature as shown to the right provides effortless temperature and humidity sensor data monitoring. Customize how this data is displayed in JSON format when configuring the sensor.  

Another useful feature of the MQTT.fx application, a cloud update topic, allows the user to configure settings using JSON formatted commands. This can be done in the open application and while the sensor is transmitting data, saving the time and effort of repeating the sensor setup process each time a setting needs to be changed. 

The interval of transmission can be updated by publishing the following JSON command to the cloud update topic: {“interval”:2000}. This happens to be what was done in the visual to the right. After this command is given, new temperature and humidity data from the sensor is displayed every 2 seconds. 

Transmission Interval

This device sends data periodically based on user-preset timing intervals. As this sensor does not use batteries, the transmission interval does not need adjusted with the intention to save battery life. 


At NCD, security always remains a top priority when developing new products. Therefore, this MQTT WiFi Sensor contains both WiFi and MQTT security protocols. 

WiFi Security Features:

  • WPA/WPA2/WPA2-Enterprise WiFi Security Protocols
  • IEEE-802.11B/G/N WiFi Protocols
  • DHCP or Static IP Managed Wireless Networks

MQTT Broker Security Types:

  • TLS
  • Basic AUTH
  • OPEN

The security features that are accommodated by this WiFi MQTT Sensor are compatible with almost all IoT servers available. When configuring the sensor through the MQTT web interface, you are presented multiple options for increasing the security of your device such as a Soft AP username and password. Utilizing features like this are recommended as it adds one more layer of security to your WiFi sensor.

IoT Security should be taken very seriously. This is why NCD implements the best security features with our products. Be sure to check out the product user guide listed under the Resources Tab to learn more about how to configure the settings on your device.

Sensor Setup

Upon connecting to a MQTT WiFi Sensor, the NCD Web Interface will automatically open and be displayed. This easy-to-use interface allows for configuration of the MQTT Sensor over WiFi in one simple step without any software download or complicated set up procedure. 
Using the product user guide for reference, the user can choose which network the device will connect to, create a password to be able to access the device, and customize the MQTT settings. These MQTT settings include server settings, client settings, and message settings.


Not for use in outdoor applications or for use in excessive temperature conditions. Prolonged exposure to extreme humidity conditions may damage this device.  The sensing element is rated for use for 5 years and may be replaced. NCD Warranty does not cover use in excessively smoky environments under any circumstances.

This device supports:

  • WPA/WPA2/WPA2-Enterprise WiFi Security Protocols
  • IEEE-802.11B/G/N WiFi Protocols
  • DHCP or Static IP Managed Wireless Networks



Mechanical Drawing

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Extended Lead Time

This product requires extensive manufacturing and testing times. Lead times for Enterprise Series Devices is typically 7-10 business days.

Product Identification
UPC: 689860072244
Country of Origin: US
HTS Code: 854231
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We Customize Just for You!!

NCD offers many custom IoT electronic design services to help tailor our product to your exact needs.  Whether you are looking for custom firmware, circuit board modifications, metal enclosures, or industrial color printing, we can help you with a wide variety of design services.

Custom IoT Electronic Design Services Process

Most of our users purchase off-the-shelf hardware for initial testing.  Once everything is working, they contact us to build a custom solution which may include specialized changes to the board, firmware, connectors, etc.  Custom boards have many advantages such as reduced wiring, easy installation, small size, less power consumption, and in some cases, an overall reduction in product cost.  Custom IoT Electronic Design Services will have your company name and logo on the board as well as the enclosure.

Customized IoT Electronics

NCD engineers can help build a customized solution for your particular application based on the designs you see on our website.  We can combine devices onto a single board, change the shape, or even some of the components to meet your exact needs.  We also provide turn-key metal enclosures with powder coating and full-color printing on the top side starting at just $500 for setup!  We have more than 20 years of experience in electronics design and manufacturing.  All of our products are designed and manufactured in the USA, so we are here to support the products we make.  We only ask that our customers prototype their needs using our existing products before we customize.

Customization Guidelines

  • Custom designs should be based on our existing product because we can’t build rockets or electric cars over here!
  • We do not provide customization services if it involves the introduction of a new or untested technology.
  • Custom engineering fees depend on your requirements, so please contact us for a quote!
  • We maintain ownership of all designs, including our customized designs as they are based on our existing Design.
  • We will only ship the customized product to you or your authorized agents.
  • We have an NDA available if needed.
  • The turn-around time is about 2-3 weeks.
  • We specialize in low-volume designs, no quantity is too small!
  • We have the ability to scale to large volumes as needed.

Getting Started with Product Customization

All you have to do is contact us and we will walk you through the process from beginning to end, based on your individual needs.  Some people are surprised at how fast we finish CAD design (usually a few hours), but keep in mind, we still have to build your design, which takes considerably more time.  When we customize product, here are the general services we provide:

  • We design the circuit board.
  • We communicate with our customers throughout the customization and manufacturing process.
  • We manufacture surface mount stencils and circuit boards.
  • We program our pick and place machines to build your boards.
  • We build a working sample and run it through our wave solder machine.
  • We test your custom IoT solution.
  • Once the design is finalized it won’t be possible to make changes during production (changes cost money and require us to repeat the above processes)
  • Once it meets all your requirements, we will start production as needed.
  • We work with our metal fabricators to design a metal enclosure if required.
  • You work with our artist to print the top side of the enclosure in full color with your company logo if required.

+MORE App customizations

We partnered with Blynk who have developed the +MORE app.  If you are interested in customization to their +MORE app then we're sure you will enjoy working with them as much as we did.  They can customize the user interface +MORE mobile app at your request.

  • Add new functionality and features to the mobile applications and web dashboard
  • Change/ add data visualizations options

Contact them today for custom App Development!

White-labeled mobile apps and dashboard

Blynk the developer of +MORE has a fantastic team of developers eager to help with your IoT applications.  They offer the following services.

We provide white-label IoT infrastructure:

  • Private IoT cloud
  • Branded mobile applications for remote monitoring and control
  • A branded web dashboard to manage fleet of your devices
  • Big Data analysis with actionable insights
  • Development of machine learning algorithms

Contact them today for all of your IoT cloud needs!

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To learn something new, take the path that you took yesterday. ~John Burroughs

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