This instrument is aimed to be installed in a panel board, on a DIN rail. The electromechanical counter that counts the operating hours of a machine or piece of electrical equipment. Giving a precise indication of operating time, the counter is used to decide when to carry out preventive maintenance. The electromechanical display is composed by 5 digits plus 2 for decimals, and indicate operating time up to 99,999.99 hours. This instrument do not have a reset button. The dimensions of the product are 36mm in width or 4 9mm modules, 87mm in heigh and 65mm in depth.