Neuron Dry Contact

The Neuron Dry Contact is a small and compact sensor for detecting Open/Closed electrical contact in potential free loops. The sensor can be used in humid areas due to IP67 encapsulation.

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

General Description

The Neuron Dry Contact sensor is an electronic device that detects the presence or absence of electrical contact in potential-free loops.

The sensor is designed to be used in a wide range of industrial and commercial applications, automation systems, and process maintenance. They are typically used to detect the position of mechanical parts, such as doors, valves, and machine components.

The Neuron Dry Contact sensor has a wide operating range from -40 – 85 °C and has a robust IP67 enclosure for mounting in rough conditions.

The sensor has an integrated battery which will last up to 10 years**.


Principle of Operation

The Neuron Dry Contact consists of a pair of wires that measures the electrical potential between them. When the two wires are connected through the valve, door or similar, an electrical circuit is completed, signalling that the contact has been activated. Conversely, when the contact points are separated, the circuit is open, signalling that the contact has been deactivated.

Every three second the sensor measures the loop contact and if the loop status has changed since the last transmission, the sensor reports immediately. Otherwise, it reports every 2 minutes.



  • Integrated 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

  • Position of valves, switches, circuit breakers etc.
  • Open/Closed door and gate
  • Motor Protection
  • Count Status Changes



Measuring Range:
Open/Closed Loop

Measuring Frequency:
Every 3 sec

Report Frequency:
Every 2 min. Or immediately after change in status open/closed loop

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: 422235
North America/Australia/New Zealand: 422435

Product Sheet

Product Sheet –
Neuron Dry Contact

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***:
Open/Closed Loop

Measuring Frequency*:
Every 3 sec

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

Trigger for Critical Data Transmission*:
Change in status open/closed loop

Operating Environment:
Ambient temperature: -40 – 85 °C
Relative humidity: 0-100%
Altitude: < 2000m above sea level
Pollution degree: 4

IP Grade:
IP 67, wet conditions, 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
*** Applying a voltage over the inputs may permanently damage the device

Physical specification

POLYblend 65 FS / TPU

Connection Type:
2 x 40 cm RADOX 155 0.25 mm2

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.