The utility model relates to an alignment sensor is put in cable electroacoustic integral type office, its technical scheme is: the one end of shell is used for fixed output joints, photoelectric conversion module, switch, and the opposite side is used for fixed safety cover, and inside the supersound oscillator embedding safety cover, the external connection supersound signal collector of supersound oscillator, the internal connection supersound signal circuit board of supersound oscillator, supersound oscillator are used for receiving ultrasonic signal, and electric signal circuit board is connected to supersound signal circuit board, electric signal circuit board connect output connect with the photoelectric conversion module, it is continuous with the screw hole of shell rear end that the extension rod passes through preceding terminal bolt, emitting diode welds on electric signal circuit board, emitting diode fixes in the switch both sides, whether emitting diode is used for the internal connection 2 board normally to work, the beneficial effects of the utility model are that: improve effective accuracy of ultrasonic detection, be light signal output with electric signal transition, ensured accuracy, the reliability of transmission back signal, improved the accuracy that detects.