brand new and high quality. 6-digit display counters electrical contacts without voltage input comes Display: LCD Reset: reset the panel or the terminal Signal input: contact or voltage Minimum count signal: H7EC-6 (8)-50ms (10 times / sec) Power Supply: Internal Power Count : 0 -999999 / 99999999 Ambient temperature: minus 10 degrees to 40 degrees C (but not freezing state) Operating humidity : 35-85% RH Size: 4.8cm(1.89in) 4.5cm(1.77in) 2.4cm(0.94in) Features: Internal self-powered, no external 6 or 8 LCD display, large and clear display Panel on the left with a lock to prevent misuse You can enter contact signal or signals count is accurate and reliable Maximum count rate of 60 seconds / second, 200 times / sec No mechanical wear, long life alternative to electromagnetic countere Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Electronic Counters