Features 5-digit LCD screen with large screen, low power consumption and long battery life. The input adopts the common contact signal, the selection of the sensor is simple and convenient, and the counting is accurate and reliable. Anti-shock design to prevent data loss, no mechanical wear, reliable operation and long service life. Both the panel and the outside can be cleaned. Maximum counting speed reaches 20 times/sec. Specification: Item Type: Counter Brand:BERM Product model: BEM-5C Power supply type: built-in battery Battery Model: AA R6P Voltage: 1.5V Capacity: 1500mA Counting range: 0-99999 (5 digits) Counting the highest frequency: 50 Hz Count the minimum pulse duration: 1 mS Maximum contact resistance: ≤1KΩ Minimum contact break resistance: ≥500KΩ Erase Mode: Panel/External Operating ambient temperature: -5°C ~ 40°C Dimensions: 64 x 38 x 38 mm / 2.52 x 1.5 x 1.5 inches Opening Hole Size: 63 x 36mm/2.48 x 1.42 inches Package List: 1 x Counter Package List 1 x Counter