["Feature:\n1. 5 digit large-screen LCD display, large and clear\n2. Use an ordinary AA Batery, no external power supply, and easy battery replacemen\n3. Press the- PAUSE button to pause/count, press the- PAUSE button again, and resume counting\n4. Input adopts ordinary contact signal, simple and convenient to select sensor, accurate and reliable counting\n5. The highest counting speed: 20 times/second, 1200- times/minute\n6. Clear: Panel/external use\nSensor doesn'for t included.\nTechnical Parameters:\nPower supply: 1.5V AA battery (For safe delivery, not included)\nCounting range: 0---99999\nCounting the highest frequency: 20HZ\nCounting minimum pulse width: 10mS\nContact maximum resistance: ≤ 10KΩ\nContact disconnection minimum resistance: ≥ 500KΩ\nClear method: panel/external\nClear the minimum pulse width: 0.1 seconds\nAmbient temperature: -5--40°C\nDimensions: 64x38x38mm\nOpening size: 61x36 mm\n\nHow to use:\nStart counting: Counting terminal input contact signal, the counter starts counting.\nPause counting: Press the- PAUSE button to pause the counting; press the- PAUSE button again to resume counting.\nClear the panel: Press RESET directly.\nExternal clear: clear the external contact of the terminal and clear- it directly.\n\nPackage include:\n1 x Electronic Counter (Not included Battery for safe delivery)"]