ใช้สำหรับควบคุมอุปกรณ์ไฟฟ้า Red Mushroom Cap 1NO 1NC DPST Emergency Stop Push Button Switch AC 660V 10A * Features: 4 terminals, 22mm mounting hole, 1NO+1NC contact type, red mushroom emergency stop latching push button switch with yellow cap. * Used widely to control the electromagnetic starter, contactor, relay and other automatic control electric circuits.