A. This row counter uses magnetic induction, making it easy to install and enabling accurate counting. B. This electronic counter presses the Counting/Pause key to stop counting. After 0 - 30 seconds, the LCD indication will automatically turn off and enter the standby state. Press the Counting/Pause key again to turn on the indication and continue counting. C. This clicker counter has a shockproof design, which can efficiently ensure stable and reliable system operation and is free from mechanical abrasion. D. This digital counter is made of plastic, which is sturdy, durable, safe, and has a long lifespan. E. This number clicker counter uses the common AA battery and is free from external power supply. F. This digital counter is made of plastic, which is sturdy, durable, safe, and has a long lifespan. The working temperature of the magnet should be within 70 degrees. Too high a temperature will make the magnet lose its magnetism and further make the induction invalid. It has a five - digit LCD display, ultra - low power consumption, and a large and clear display. Features: A. Digital counter - Color: As shown. - Material: Plastic. - Size: Hole size: 2.5x1.4 Inch. B. Power supply: 1.5V - AA battery (not included). C. Usable ambient temperature: -5 to 40°C. D. Magnetic induction range: about 5 - 10 mm. E. Maximum counting speed: 20 times per second. Note: 1. The digital counter is not shipped with a battery. 2. Due to different lighting and screen settings, the product color may be slightly different from the picture. 3. Due to different manual measurement methods, slight size differences may occur. Package Including: 1. 1 * Digital Counter 2. 1 * Proximity Switch 3. 1 * Mounting Bracket 4. 1 * Magnet