Sufficiently accurate and stable device for home use. Spend the coil on the finish line to the electrical panel and you will have your current consumption (P = V x I for those who forgot hihi). advisable to switch on the power supply for consultation, otherwise the display remains lit. Small criticism: the ridiculous length of the son of the coil and the fineness of the soldered lead wire that makes the delicate welding and the use of an impossible terminal. Why not put a terminal block as for the 220V connection. Excellent product but given the price, provided that it falls within the term.