Lightning counter is a means by which it is possible to keep electrical appliances safe from damage caused by lightning strikes to the device or building, thus obtaining the number of lightning strikes in the building. Due to the fact that the lightning strike next to this device prevents the entry of this high voltage into electrical appliances. The operation of the lightning counter is that there are two terminals connecting a high voltage terminal and the other to the earth, and when a powerful and fast voltage strikes the lightning counter, the device passes this voltage through its terminals to the ground. And so it protects electrical appliances.