specifications: 1) contact resistance: 1,000m ohm 4) withstand test voltage: dc 1,000v 5) times of repetitive use: >750 6) designed and manufactured in accordance with iso / iec11801 standards 7) design exceeds normal requirements 8) colored component combinations for convenience of identification and network management 9) many other message modules available for wiring arrangements 10) material: house: pc; contact pin: gold-plated bronze packing: plastic bag, carton my information my e-mail:1000kathy@gmail.com website:www.okfoc.com msn:caizf831015@126.com skype:kathy604270824