1. 5 digit large-screen LCD display, large and clear 2. Use an ordinary AA Batery, no external power supply, and easy battery replacemen 3. Press the- PAUSE button to pause/count, press the- PAUSE button again, and resume counting 4. Input adopts ordinary contact signal, simple and convenient to select sensor, accurate and reliable counting 5. The highest counting speed: 20 times/second, 1200- times/minute 6. Clear: Panel/external use Sensor doesn't included. How to use: Start counting: Counting terminal input contact signal, the counter starts counting. Pause counting: Press the- PAUSE button to pause the counting; press the- PAUSE button again to resume counting. Clear the panel: Press RESET directly. External clear: clear the external contact of the terminal and clear- it directly. Delivery Quantity: 1pc Package Contents: Only the above package content, other products are not included. no battery provided Size: 7.2*3.8*3.1 cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) color: White (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)