CT6Highly visible LED readout. Contact or non-contact measurement. Switch selection of rate, time or counting modes. Optional remote sensor. With a rugged carry case. Measurement range: rpm: 3 to 99,999; M/min: 0.3 to 19,999; ft/min: 0.3 to 19,999; time-interval: 0.01 to 99,999sec.; Counts: 1 to 99,999.Display: 5 digit red LED, 0.4" (10.5mm), floating decimal in autorange mode.Display update time: 0.8 second above 75rpm, time between pulses below 75rpm.Accuracy: rpm: 0.05% of reading, 1 digit; M/min and ft/min: 2% of reading.Auto/fixed ranges: user selectable via yellow switch.Resolution: rate, fixed decimal mode: 1 digit; rate, autorange: maximum 0.001 units (revs/m/ft ); time modes: max. 0.01 sec., autoranging only; count mode: 1 count (1 pulse/shaft rev. in contact mode).Memory recall: last reading available for up to 1 min after automatic power-off.On target indicator: green LED glows when optical alignment is correct.Battery low indicator.Optical range: 1" - 3’ (25 - 1000mm).Light source: visible light, long life lamp.Operating temperature: 32 to 113F (0 to 45C).Dimensions: 205 x 70 x 40mm.Weight: 1lb 12oz. (794g).