brand new and high quality Features: Five large-screen LCD screen display, large and clear. Use the common AA batteries, without external power supply, and the replacement of the battery is convenient. Press the PAUSE button to pause/count, press the PAUSE button again, and resume counting. The input adopts the common contact signal. The selection of the sensor is simple and convenient, and the counting is accurate and reliable. Maximum counting speed: 4 times/second. Resetable zero: panel/external dual purpose. Seismic design effectively prevents data loss. No mechanical abrasion, reliable work, long service life. Specification: Power: 1.5V AA battery Resetable zero mode: panel/external Counting range: 0~99999 Resetable zero minimum pulse width: 0.1 second Counting highest frequency: 4HZ Operating temperature: -5~+40 C Counting minimum pulse width: 50mS Contact maximum resistance: 1K Ohm Contact disconnection minimum resistance: 500K Ohm Dimensions: 63x37x30mm/2.48x1.46x1.18inch, wire length: 110cm Color: White&black Quantity: 1 Set Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x LCD Display Digital Electronic Punch Counter (without battery) 2 x Microswitch