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Safety and Key feed


Complete safety concept

Don't you wish you had a simple safety and key
interlock system
to protect your dangerous working
areas. If you are looking for a reliable, expandable,
flexible and cost saving solution, then you have found
the perfect solution with SAFEMASTER® STS.




AdvantagesSicherheitsschalter- und Schluesseltransfersystem Safemaster STS

  • Modular expandable system
  • Robust stainless steel construction
  • For use in extreme ambient tempe-
    ratures and hostile conditions, e.g.
    dust, moisture, dirt, etc.
  • Protection against being locked in
  • Ergonomic key design
  • Economic and easy to use


The SAFEMASTER® STS Program consists of modules that can be combined individually and adapted to your application.

The modular design allows systems to assemble out of several units, or to modify and expand existing systems as required.


The safety combination



With only a few single components, a number of individual interlock units can be assembled. The as standard stainless steel untis guarantee good stability.

1 standard actuator
2 end module
3 actuator module B
4 padlock module
5 actuator module A
6 bayonet ring
7 key module
8 switch module
9 solenoid locking module
10 end module


An example

The picture shows a press with several access gates. When opening the main entry gate A during operation, the machine stops immediately. To open the maintenance gates B the following sequence has to be followed: Open gate A, take out coded key, insert key in gate B, open gate B. After reversing the procedure the production may be started again.

The maintenance gates are made safe without wiring.



With effective safety solutions from DOLD you can protect your staff as well as your production machinery.

You can rely on our experience as long term manufacturer of safety modules and systems, monitoring devices and power electronics.

The modular Safety switch and key interlock system SAFEMASTER® STS has been designed to secure dangerous areas with guards and provide efficient operation with optimised protection for the machine operator. In addition it offers protection of being trapped in the dangerous area during repair or maintenance work.

Product selection

9 Modules => 48.000 possible combinations.

Modular design, flexibility and easy extending make it possible:

SAFEMASTER® STS offers an optimised, totally individual guarding solution for your application. The guard fits to your application, not vice versa. 

Describe your application and we will be happy to advise you on guarding your plants.

You can contact us

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