正宗原装台湾FOTEK阳明SY-3D计时器 范围 0 ~ 99 0 ~ 999 0 ~ 9999 0 ~ 9999 显 示 0.56＂Red LED 0.56＂Red LED 0.4＂Red LED 0.36＂Red LED 单位S → 0.1S → 0.01S → M → 0.1M → H → 0.1H （可选择） SY-2DSY-3D SY-4D H5T-4D STP-2DSTP-3D STP-4D H5M-4D