南京宏聚电子有限公司：钮子开关​ Rating：3A 120VAC OR 28VDC Contact Resistance：20mΩ(Max) Insulation Resistance：1000MΩ Dielectric Strength：1500VAC For 1 Minute Temperature Range：-30℃～+85℃ Safety Approal：UL CUL CQC ROHS Electrical Life:30000Make-and-break-Cycles At Full Load www.njhjdz.com