The Non-Intrusive Load Monitoring is a technique that can be used to recognize appliances that are being used in a house from their electrical characteristics, such as the profile of the current that they absorb. This technique can be employed to potentially achieve an appliance by appliance complete disaggregation of the loads connected to a power grid and therefore of the ongoing energy consumption. The Non-Intrusive Load Monitoring can have different applications, going from the partitioning of the electrical bill to the smart management of local power sources, like solar panels. The purpose of the proposed study is to realize a prototype which is capable of detecting the activation of an appliance, called “event”, from the waveform profile of the current absorbed from the power grid, and of classifying it.