S.A.
The NEF30-KLCXY230V part is a push-button switch with 1-position, normally open (NO) and normally closed (NC) connections. It measures Ø30.5mm in diameter and is sealed with an IP56 rating, which will protect the device from dust, dirt, and liquids. The switch core is made from a 30mm red plastic, and it's manufactured by Promet S.A.