尺寸：
16.3x5.6mm 重量：
1.6g 材料：不锈钢
1990A美国原装TM钮，是巡检系统的基础，将高性能集成电路芯片封装在不锈钢内，具防水防震，坚固耐用等功能，并内置不可修改的全球唯一的TD码。用于放置在必须巡检的地点或设备上，也可作人员识别身份钮。
1990A-USA original TM Niu,is the basis of inspection system will be high-performance integrated circuit chip package in staninless steel,wihein a waterproof shockpoof,rugged features,and built-in can not be modified in the world's only TD yards.Be placed on the need for the inspesction of the location or device ,nor do officers identify the status button .
