Overview: This product is designed to record the cumulative total of electronic pulse signals. It is widely used for electric pulse counting in industries such as oil, chemical, textile, machinery, mining, defense, agriculture, food, and printing. Features: Four-digit electromagnetic counter for recording the cumulative number of electric pulse signals. High-speed counting capability with accurate measurement and low indication error. Simple and compact design, making it easy to install and store. Can be integrated with secondary instruments to function as a digital display device. Generates electromagnetic force when an electrical signal is input to the counter. Suitable for various electric pulse counting applications in petroleum, chemical, textile, machinery, mining, defense, agriculture, food, printing, and other industries. Specification: Model: CSK4-YKW Material: Plastic Weight: 108g / 3.8oz Count Range: 0–9999 Voltage & Power: #01 AC 220V, AC 2.5VA; #02 AC 110V, AC 2.5VA; #03 DC 24V, DC 1.5W (Optional) Voltage Fluctuation Range: ±10% Tolerance: -15% to +10% (rated voltage) Frequency: 50–60Hz Count Speed: DC 20 times per second, AC 10 times per second Indication Error: < 1 × 0.00001 Operating Temperature: -20°C to 50°C Relative Humidity: 85% Installation Method: Panel mount Reset Mode: Push-button (with lock) Package List: 1 × Electromagnetic Counter