Light switch

[IanS12345]

Hi, I am trying to replace a light switch on the upstairs landing. As is common, there is a switch for the same light downstairs.
I the current set up, the red wires are connected together and then there are 2 blue and 2 yellow in 4 ports of the switch.
The new switch only has 3 ports.
Do I need a specific switch orcan I wire using the new one?
Thanks

 

[securespark]

No, you need an intermediate switch.

 

[IanS12345]

Appreciate the reply. Many thanks

 

[securespark]

There must be at least 3 switches for that/ those light/s.

At each end there are 2 way switches (with 3 terminals) and in the middle, intermediate(s) that have 4 terminals.