Item Type:Counter Brand:BERM Product Model: BEM-6C Power Supply Type: Built-In Battery Battery Model: AA R6P Voltage: 1.5V Capacity: 1500mA Counting Range: 0-999999 (6 Digits) Counting The Highest Frequency: 20Hz Count The Minimum Pulse Width: 1mS Contact Maximum Resistance: 1K Contact Disconnection Minimum Resistance: 500K Clear Mode: Panel / External Operating Ambient Temperature: -5 ~ 40 Size:64 x 38 x 38mm / 2.52 x 1.5 x 1.5in Opening Hole Size:61 x 36mm / 2.4 x 1.42in Package List 1 x Counter 16-digit large-screen LCD display with low power consumption and long battery life. 2The input adopts the common contact signal, the selection of the sensor is simple and convenient, and the counting is accurate and reliable. 3Maximum counting speed reaches 20 times / sec. 4Panel and external can be zero-clearing, anti-shock design, effectively prevent data loss. 5No mechanical wear, reliable working, long service life.