* 頻率範圍:10H*～1KH*,符合國際規範 ISO 2954.
* RS-232 計算機連接接口.
* 讀值鎖定及記錄最大值/最小值功能.
* Frequency range: 10H * ~ 1KH *, in line with international norms ISO 2954.
* RS-232 computer connection interface.
* Read the value of the lock and record the maximum / minimum function.
