Features CLEAR SIX-DIGIT DISPLAY: Large six-digit LCD display, has ultra-low power consumption, long battery life, large and clear screen EASY TO USE: Press the pause switch (POWER) again for one second to pause the countdown, save data and enter the stop state, press the pause switch again for one minute to turn on the screen and resume counting. ACCURATE AND PRACTICAL: This counter using magnetic induction, simple and convenient installation, brings precise counting FAST COUNTING SPEED: Panel-mounted fixing screws have a maximum counting speed of 20 times per second, 1,200 times per minute. When the magnet is detected, the ok indicator will show on the screen EASY BATTERY REPLACEMENT: Using ordinary AA batteries (not included), no external power supply is required and the battery is easy to replace, very convenient Feature: 1. ANTI-SEISMIC AND DURABLE: Adopt anti-seismic design, effectively ensure the stable and reliable operation of the system, no mechanical wear with long service life Specification: Item Type: Digital Counter Material: ABS Battery model: 1 x 1.5V AA battery (not included) Counting range: 0-999999 Highest counting frequency: 20 HZ Minimum pulse width counting: 2 MS Magnetic induction proximity distance: approx. 10~15mm/0.39~0.59inch Magnetic induction distance: ≥ approx. 35mm/1.38in Clear minimum pulse width: 1S Ambient temperature: -5℃~40℃ Dimensions: approx. 68 x 30 x 45mm/2.68 x 1.18 x 1.77in Hole Size: Approx. 61 x 35mm/2.4 x 1.38in (Size may have some error due to manual measurement) Package List: 1 x counter 1 x magnetically controlled induction switch 1 x magnet 1 x bracket Note: 1. The signal line for counting and clearing the input should be as short as possible to avoid wiring with strong power lines or power lines to avoid unnecessary interference; if necessary, please use shielded lines, and the shielding layer is connected to the + counting terminal.2. Only voltage-free contact signal can be input for counting signal and reset signal, and no other electrical signals can be input.3. The detection distance is related to the magnetic size of the magnet. You can change the detection distance by changing different magnets. Package List 1 x Counter 1 x Magnetic Control Induction Switch 1 x Magnet 1 x Bracket