● 光電測量範圍:5.0~99999RPM. ● 閃頻測量範圍: 100.0~1000 FPM/RPM. 1000~10000 FPM/RPM. 10000~99999 FPM/RPM. ● 閃頻採用超高亮度LED. 省電耐用. ● 精確度:±0.1%. ● 可記錄測量過程中之最大∕最小∕最後值. ● 攜帶型( 電池1.5V×4) ● Size:215×65×38mm.