Victor est vrai. Merci Victor.
Some translation:
The question was:
Do SIMAs need an emergency stop button like the robot which is big and red or will a small switch suffice?
Answer:
You will need a button as it is required with the big Robot. Red, min 2cm diameter and activated by a downward push e.g. with a open hand or fist. (Yes you might emulate this with other things than a original emergency button, you will have to make sure to check all requirements)