Tact Switch >> TS-016 see spec in PDF
 
 
General Specifications :
   Circuit : PUSH ON
   Rating : D.C. 12V 50mA
   Contact Resistance[max] : 50m[(initial)
   Insulation Resistance[min] : D.C. 100V 100M[
   Dielectric Strength : A.C. 250V 1minute