Active electronic phase comparator DEHNcap/PC-LRM with artificial leather bag and three separate LEDs according to EN/IEC 61243-5 (DIN VDE 0682-415) for verifying in-phase conditions on all poles in switchgear installations with LRM test sockets. Can be used for HR test sockets by means of two HR-LRM test adapters. For nominal voltages up to 45 kV / 50 Hz (three-phase system). With integrated self-testing element and battery monitoring. Device detects zero crossings of the two systems to be compared.