Check the listing for details. Digital Punch Electronic Counter Magnetic Inductive Proximity Switch L020. Condition: New. Listed at 15.99 USD. 100% brand new and high quality Features: 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 Technical Parameters: Power supply: 1.5V -- AA battery (For safe delivery, not included) Counting range: 0---99999 Counting the highest frequency: 20HZ Counting minimum pulse width: 10mS Contact maximum resistance: ≤ 10KΩ Contact disconnection minimum resistance: ≥ 500KΩ Clear method: panel/external Clear the minimum pulse width: 0.1 seconds Ambient temperature: -5--40°C Dimensions: 64*38*38mm Opening size: 61*36 mm 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. Package includes: （as picture shows) 1X Electronic Counter 1x Proximity Switch 1x Magnet On Jul-16-21 at 20:55:12 PDT, seller added the following information: