Model:LAY37+SCProduct type : Push button switchButton head diameter: 39mmContact Type: Copper PointButton colour RedOperating position: topSales unit: 1 PcsProduct weight: about 45gPacking: bubble movie envelope bagLAY37 emergency quit button swap mushroom head with warning ring 60mmWarning circle: inner diameter 22mm, outer diameter: 60mmFriendship reminder: In the process of utilizing the user, the head of the button needs to be removed After installing the panel, the button head should be changed Therefore, it isn't essential to set up the caution ring first