Stroboscope 110VAC 100-10 000 RPM Flashes per Minute 100 to 10 000 RPM Range 100 to 10 000 RPM Resolution 1 RPM Display 4 Digit LED Display Accuracy +/-0.05 Percent + 1 dgt. Flash Duration Approx 60 to 1000 micron s Power Requirement 110VAC 50/60 Hz Includes Light Bulb Power Cord Manufacturers Warranty Length 1 yr NIST Certified No