Push button spring return switch,raised button 1.plastic button 2.CE approval ... years HB2-E Series Push button switch 1.Raised button spring return2.CE approval3. ISO9001 qualitified4.OEM 12 years 5.Color ... : Red,white,black,green,yellow,blue 6.Contact type: N/O, N/C, NO+NC Huawu Electric is specialized ...