Features： 1、ACCURATE AND CONVENIENT: This counter using magnet induction, simple and convenient installation, bring accurate counting 2、EASY BATTERY REPLACEMENT: Using ordinary AA batteries(not included), no external power supply is required, and the battery is easy to replace 3、SEISMIC PROOF AND STABLE: Adopt seismic proof design, effectively ensure the stable and reliable operation of the system 4、NO WEAR AND RELIABLE: No mechanical wear, support reliable operation and long service life, you can use with confidence 5、VARIOUS APPLICATION: 0‑99999 5 digit digital display magnetic electronic counter is suitable for punch, machine tool, assembly line Specification： Item Type: Punch Electronic Counter Material: ABS Battery Model: 1.5V AA battery(not included) Counting Range: 0-99999 Highest Frequency of Counting: 20HZ Counting Minimum Pulse Width: 1MS Clear Minimum Pulse Width: 1S Magnet Induction Proximity Distance: Approx. 10 ~ 15mm / 0.39 ~ 0.59in Magnetic Induction Distance: ≥ Approx. 35mm / 1.38in Package List： 1 x Counter 1 x Magnetic Control Induction Switch 1 x Magnet 1 x Bracket