measure range: 2.5 to 99,999rpm

resolution: 0.01rpm(3 to 999.99rpm)
　　　　　　0.1rpm(1,000 to 9,999.9rpm)
　　　　　　1rpm(over 10,000rpm)

accuracy: ±(0.05%+1 digit)

respones time: ≥1,000rpm, 0.2second
　　　　　　　 <1,000rpm, 0.5second

memory function: single-mode automatic memory
maximum, minimun, the last measurement,

continuousmode can record 18000 measuring values.

interface: mini-usb interface

the lens with filter, only receive the red light with
specific wavelength and filter the other light effectively.

measurable speed(rpm), frequency(hz), with theaccumulated date function.

white backlight lcd.

compact and portable design.

本产品的加工定制是是，类型是电子转速表，品牌是SAMPO/欣宝，型号是SM8238，测量范围是2.5to99,999RPM，测量精度是±(0.05%+1digit)，分辨率是0.01RPM(3~999.99RPM)，电源是1.5VAAA*3PCS