The Testboy® TV 435 line splitter is an adapter for testing various measured values of a consumer. Due to the existing Schuko connections, the adapter can be easily connected between the consumer and the socket. lt is possible to measure the single and 10-fold load current, the differential current between phase conductor and neutral conductor as well as the protective conductor current can be determined with the aid of a current clamp. The voltage ratios between the connected conductors can also be determined via the existing measuring sockets.