[Vocabulary] Kind of keys

[Rona 12]

[h=2]What are these ´´keys´´ for gate or door opening called, please?[/h]

 

[Amigos4]

The items appear to be battery operated remote controls.

 

[Rona 12]

No there are no batteries, there is a processor inside and you need to touch on a reader to open a gate.

 

[bhaisahab]

No there are no batteries, there is a processor inside and you need to touch on a reader to open a gate.

I think they are simply called "electronic keys".

 

[Amigos4]

What are these ´´keys´´ for gate or door opening called, please?

The image you posted can be found at Heureka.cz - Vyhledávání cip DALLAS

The item is called an "ID Memory Button". It is also known as a 'DALLAS Chip'. It does need a battery.

Cheers,
A4