Model RP 430 Input 3 - 30V DC from Proximity Sensor, Photoelectric Non Contact Sensor, Encoder, Potential Free Contacts, Limit Switch etc., Input Speed 3.5 kHz (Max.) Range 0 - 9999 RPM Resolution 0.001, 0.01, 0.1,1 RPM (Auto Ranging) Sensor Supply 12V DC (±10%) 50mA Accuracy ± 0.05 % (± 1 count) Display 4 Digit 0.5”seven Segment Red Led Working temperature 0 - 50 ºC Power Supply 90 to 270V AC / DC 50Hz Dimension 36 x 72 x 65 mm Weight 200 grams (Approx.)