Division 3.3 CONTROL SYSTEMS
United Kingdom
If necessary, steps must be taken to prevent unauthorised use of controls.
In the case of remote controls, each control unit must clearly identify the machinery to be controlled from that unit.
The remote control system must be designed and constructed in such a way as to affect only:
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the machinery in question,
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the functions in question.
Remote controlled machinery must be designed and constructed in such a way that it will respond only to signals from the intended control units.