Principle of operation and introduction: DL527C 7-digit electromagnetic counter is used to record the accumulation of electrical signals. When the electromagnetic counter is energised, the magnetic force generated by the counter coil will make the linkage mechanism inside the counter in the suction state, and the linkage mechanism will pull the digital wheel of the counter to make it display the half-word, and the linkage mechanism will be reset to pull the digital wheel of the counter to complete the display of one digit after the electromagnetic counter is de-energised. It can be used for intermittent counting work, such as statistical counting, mechanical counting, currency counting, flow counting, group selection counting, etc. It is widely used in printing, textile, printing and dyeing, machinery, high-voltage switch, high-voltage switchgear and other industries.