Detection device suitable for join in marriage net relay protection

The utility model discloses a detection device suitable for join in marriage net relay protection, including detection case box and detection case case lid, detection case case lid one side is connected with the detection case box through a pair of hinge, and the inboard one end of detection case box is equipped with the display screen, and the inboard other end of detection case box is equipped with the control recess, and the one side that is located the display screen in the control recess is equipped with a plurality of control button, is equipped with alarm indicator and speaker in the control recess on the opposite side, the utility model has the advantages of reasonable design, well situated cost is through combining alarm indicator and speaker to design with current sensor and singlechip for can send chimes of doom and warning light when the measuring is out of order, thereby avoid when night the little delay fault handling of chimes of doom propagation scope to lead to the fact the circumstances of b