Neuron Humidity

The Humidity sensor measures relative humidity in the air. In addition it measures the ambient temperature. Typical applications are an overview of the indoor environment in all types of rooms or outdoors (as long as it is not very exposed to the weather). The sensor is attached with double-sided tape or strips where you want an overview.

Experience how easy it is to get started and the huge benefits of our simple and practical IoT solutions.

General Description

The Neuron Humidity is an energy efficient solution for measuring humidity and ambient air temperature.

Due to wireless transmission of the signal, it is also easy and timesaving to install.


Principle of Operation

The Neuron Humidity measures the temperature every 30 seconds. If the humidity has changed with more than 5% RH since the last transmission, the sensor reports immediately. Otherwise, it reports every 2 minutes.



  • Long life battery – up to 10 years lifetime
  • Continuous measurement and instant alarm
  • Adjustment of parameters such as measurement
    frequency on request
  • Define your own alarm levels in the Neuron app
  • Receive alerts as push notifications, emails or SMS
  • Easily connect the sensor to the system with the QR-code on the sensor. Ensures immediate and accurate registration in the app on your phone/PC/tablet
  • The sensor transmits data to your nearby Neuron Gateway which then again communicates with the Neuron Cloud


Typical Applications

  • HVAC
  • Transformer Substations
  • Industry
  • Storage
  • Greenhouse



Measuring Range:
0-100% RH, -40 – 85 °C

Measuring Frequency:
Every 30 sec

Report Frequency:
Every 2 min. Or immediately after measurement if trigger for critical data transmission is reached

Expected Operating Time*:
Up to 10 years

*Depends on measurement frequency, amount of critical data transmissions and ambient temperature


Ordering Information

Part numbers
Europe/The Middle East/Africa: 421926
North America/Australia/New Zealand: 422421

Product Sheet

Product Sheet –
Neuron Humidity

Made in Norway

Our sensors are developed and made in Norway.

Neuron system benefits

  • Robust sensors
    Suitable for rough environments
  • Wireless
    Wireless sensor with integrated battery
  • Long lifetime
    Typical 10 years battery life
  • Quick installation
    Wireless, installed and operational in minutes
  • Collect and deliver data
    Data delivery through API and app
  • Broad offering
    More than 50 different sensor types available

Operational specification

Measuring Range:
0-100% RH
-40 – 85°C

0.1% RH and 0.1°C

± 2% RH and ± 0.2°C

Measuring Frequency*:
Every 30 sec

Report frequency*:
Reports every 2 min. Or immediately if trigger for critical data transmission is reached, see below

Trigger for Critical Data Transmission*:
5% RH change in measurement

Operating Environment:
Ambient temperature: -40 – 85 °C
Relative humidity: 0-80% (non-condensing)
Altitude: < 2000m above sea level
Pollution degree: 3

IP Grade:
IP 21, indoor use.

Radio Frequency:
863-870 MHz / 902-928 MHz

Battery Type
Li-SOCl2, 3.6V

Expected Operating Time**:
Up to 10 years

* Adjustable on request
** Depends on measurement frequency, amount of critical data transmissions and ambient temperature

Physical specification

POLYblend 65 FS

Dimensions LxWxH:


CE marking
Industry Canada

IEC 61010-1:2010
FCC Part 15C
RED 2014/53/EU Radio
Equipment Regulations 2017


Neuron sensors are ready for use out of the box and will start logging data after registering the sensor in the app. Even though Neuron sensors deliver great range and long battery life, following some simple guidelines for mounting of the sensor and gateway can greatly improve signal coverage and lifetime of the sensor.

To ensure optimal antenna performance and signal strength, the sensor should be placed elevated with some distance to fixed objects. Keep in mind that RF-signals are greatly affected by close metallic surfaces.

For sensors with an external antenna, the antenna should be clear off the metallic surface.

For sensors operating in environments with greatly varying temperatures, care should be taken to avoid putting the sensor in unnecessary stress. Very high or low temperatures will affect the battery life and the signal strength of the sensor. While some sensors must be close to the source of heat or cold, other sensors have external probes which allow the sensor to be placed at a distance.

The small, compact blue Neuron sensors are fitted with fastening holes for use with cable ties. The sensors are also delivered with double-sided tape that may be used for fastening of the sensors.

All the black Neuron sensors, like the Neuron IR380 and Neuron Vibration, are fitted with a strong magnet at the back for easy fastening. If there is no magnetic surface, then double-sided tape is a good solution.

Neuron system: Wide range of wireless IoT sensors

The neuron system has more than 50 different robust sensors that can be installed in minutes.


Need help?

Please visit our Support site:


Further reading


El-Watch Neuron system - wireless IoT sensors

A central feature of our solutions is predictive maintenance. By monitoring machinery and systems, you will know how much strain they can take before breaking down. This enables you to safely increase performance and strategically plan maintenance for minimal revenue loss.

Neuron Sensors

Neuron Gateway


Neuron Cloud

Neuron App


Find the perfect
sensor solution

We offer over 50 different sensor types. Explore the possibilities in our product brochure.