Features: Large LCD Display: 5-digit large LCD screen for clear and easy reading. Battery Powered: Uses standard AA 1.5V batteries, no external power supply needed, and easy battery replacement. Pause Function: Press the pause button to pause counting, then press again to resume. Contact Signal Input: Uses a common contact signal input, making sensor selection simple, convenient, accurate, and reliable. Resettable: Panel/external dual reset options. Seismic Design: Effectively prevents data loss. Durable: No mechanical wear, reliable operation, and long service life. Specifications: Power Supply: DC6V-15.5V Power: 1.5V AA cell (battery included) Count Range: 0 ---- 99999 Reset Minimum Pulse Width: 0.1 second Reset Method: Manual panel / external Count Highest Frequency: 20Hz, or 20 times/s Working Temperature: -5-40c Count Minimum Pulse Width: 10ms Proximity Switch Sensor: 2 wires, length: 110mm, comes with magnet Detecting Distance: 3-10mm Size: 63 x 38 x 30mm Hole Size: 61 x 36mm Maximum Resistance at Connection Point: ≤ 10kΩ Minimum Resistance at Connection Point: ≥ 500kΩ Net Weight: 0.05kg Package Includes: 1 x Digital 5-Digit LCD Punch Counter 1 x Counter Bracket 1 x Proximity Switch 1 x Switch Bracket 1 x Strong Magnet