Digital Tacho Meter RM-01U CUSTOM

With maximum/minimum/average value function.With the auto power off function convenient when forgetting to turn off.Easy to see even in dark places with the backlight function.For measuring motor's rotational speedMeasuring Range (rpm):100.0 to 99999Resolution (rpm):0.1/1Detection Distance (mm):100 to 400Measuring method: non-contact typePower supply: AAA dry battery x 2 (sold separately)W x D x H: 50 x 20.6 x 104.6mm