3600       Interface type PS/2 Voltage and required current 5.0V DC 50mA Key switch Membrane Type     Size 397.5(L) X 194(W) X 40(H) mm Stroke 3.8±0.2mm Action POS 55±15g Lifetime of key switch 10,000,000 times No. of keys 102(KR)     MIC E-C012-04-5249(B)