A connector device with improved workability in moving a detecting member to a detecting position may include a plurality of connectors configured to be fitted to a plurality of mating connectors, a detecting member arranged movably to a standby position or a detecting position with respect to the plurality of connectors and allowed to move to the detecting position when the plurality of connectors are normally fitted to the plurality of mating connectors, a holder configured to hold the plurality of connectors in parallel and an operation member capable of collectively moving the detecting member individually disposed in the plurality of connectors to the detecting position.