Extreme Conditions


Requirements and areas of application


The use of signalling devices in extreme conditions requires consideration of various conditions to ensure effective communication and safety. Extreme conditions can be many and varied, including extreme temperatures (both hot and cold), high humidity, high dust levels, exposure to water, and in environments with high noise levels or potentially explosive atmospheres.

General requirements for signalling devices in extreme conditions

Here are some general requirements for the use of signalling devices in such conditions.


Robustness and resilience

Signalling devices must be robust enough to withstand physical influences such as shocks, vibrations and falls.


Temperature resistance

The devices must be able to function in a wide temperature range without their performance being impaired.


Corrosion resistance

Materials and components must be corrosion-resistant, especially if they are used in salty or chemically aggressive environments.


Waterproof and dustproof

For use in damp or dusty conditions, the devices should be waterproof and dustproof in accordance with the IP protection classes (International Protection Marking).


Energy efficiency and power supply

Signalling devices should be energy efficient and have a reliable power supply, especially in remote or difficult to access areas.


Visibility and audibility

The signals must be clearly recognisable under the given extreme conditions. This may mean that visual signals must be bright enough to be visible in bright sunlight or that acoustic signals must be loud enough to be heard in noisy environments.


Shock and vibration resistance

The equipment must be able to withstand physical stresses such as shock and vibration, which are common in mobile applications or industrial environments.


Maintainability and reliability

The devices should be low-maintenance and highly reliable in order to minimise downtimes.


Adaptability and flexibility

The technology must be able to adapt to different and changing environments, including the ability to work with different communication networks and standards.

Selection of signalling devices for extreme conditions

The selection and configuration of signalling devices for use under extreme conditions should always take into account the specific requirements and risks of the respective application.


WERMA has developed the right signalling devices for the highest demands, tamper resistance and extreme conditions.

Signalling devices for high impact and shock resistance and tamper resistance:

The signalling devices ensure reliable and safe operation even under extreme conditions and help to maintain


Signalling devices with high IP protection

The IP rating, e.g. "IP 67", indicates how protected an electrical appliance is against water or foreign bodies. This is what the two numbers mean:


1st Digit - Contact or foreign bodies - Protection against:

IP 6X - Dust (dust-tight)


2nd Digit - Liquids and water - Protection against:

IP X5 - Water jets (nozzle) from all directions

IP X6 - powerful water jet from all directions

IP X7 - temporary immersion

IP X9K - High pressure / steam jet cleaning with water


Seawater-resistant signalling devices

With its salt content, seawater attacks many materials and wears them down. WERMA products that withstand salt water and salty sea air are made of a corrosion-resistant die-cast aluminium housing, which consists of a high-quality, seawater-resistant alloy.


Robust signalling devices on the construction site

Signalling devices used in construction must be able to withstand strong shaking and vibrations.


LED Traffic Light 890 - extra robust

LED Permanent /Blinking/ Rotating Beacon 829 - extra robust