Is this switch able to act as the 4-way switch? It says in the description but i don't see how to wire it in the specs.

Technically, it's not a 4-way switch, but it serves the same purpose. A true 4-way basically reverses connections on the two traveler wires between two 3-way switches. This dimmer is a master, and communicates with a physically similar dimmer that acts as a slave. If you want, you can add up to 9 slaves (according to the instruction sheet; I haven't tried it yet) It still needs 3-conductor wire, but one wire ties all the blue terminals together. The neatest part is you can control dimming from any of the slaves or the master. The slaves can be purchased separately, but our local Lowe's doesn't stock them. The most obvious difference is the master has a row of LEDs that indicate the brightness setting, but the slaves don't. You can purchase a set with one master and one slave at Lowe's. They can probably order slaves through their service desk.