This row counter uses magnetic induction, which is easy to install and counts accurately. This electronic counter stops counting by pressing the count/pause button. After 0-30 seconds, the LCD indication will automatically turn off and be in standby mode. Press the count/pause key again to turn on the indication and continue counting. The counter adopts a shock-proof design, which effectively ensures stable and reliable system operation without mechanical wear. The digital counter is made of plastic, which is sturdy and durable, safe and durable. This digital clicker counter uses Ordinary AA batteries, no external power supply required. Description: This digital counter is made of plastic, durable, safe and has a long service life; the working temperature of the magnet should be within 70 degrees; excessive temperature will cause the magnet to lose its magnetism, further rendering the induction ineffective; Five-digit LCD display, ultra-low power consumption, large and clear display. Features Digital Counter Color: As shown in the picture. -material: plastic. -Dimensions: Hole size: 2.5x1.4 inches. Power supply: 1.5V-AA battery (not included). Operating ambient temperature: -5 to 40C. Magnetic induction range: about 5-10 mm. Maximum counting speed: 20 times per second. Note: 1. The digital counter does not come with batteries. 2. Due to different lighting and screen settings, product color may be slightly different from the picture. 3. Please allow slight size differences due to different manual measurement methods. Package includes 1*Digital Counter 1*Proximity Switch 1*Mounting Bracket 1*Magnet