Descriptions: 1. 0-99999 5 digit large LCD screen display the counting date, low power consumption, easy to read 2. Use magnetic induction, easy to install and precise counting 3. Maximum counting speed: 20 times per second 4. Reset: through pressing the Reset buttons on board or exterior 5. Shockproof design efficiently ensure the stable and reliable system operation 6. Free from mechanical abrasion, safe work, long lifespan Specifications: Power Supply: 1.5V AA Battery(Not Included) Reset Modes: Board/Exterior Counting Range: 0-99999 Available Ambient Temperature: -5-40C Minimum Counting PW: 10mS Distance within the magnetic induction: about 5-10 mm Distance outside of the magnetic induction: 30mm Dimension: 64x38x38mm/2.52x1.50x1.50" Hole size: 61x36mm/2.40x1.42" Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 1 x Digital Punch Counter Meter 1 x Magetic Proximity Switch 1 x Magnet 1 x User Manual