Voiceprint classroom sign-in device assembly

The utility model relates to the technical field of classroom sign-in devices, in particular to a voiceprint classroom sign-in device assembly which comprises a device body and an installation assembly, and the installation assembly comprises an installation base, an installation plate, a positioning pin, a pin hole, a fixing plate, a sliding rod, a blind hole, a fixing block and a tension spring.The utility model has the beneficial effects that the machine body is limited in two vertical directions of the horizontal plane through the insertion of the positioning pin at the bottom of the machine body and the pin hole in the mounting plate and the insertion of the blind hole in the machine body through the sliding rod, so that the machine body can be mounted on the mounting plate, and compared with the prior art, the operation is simpler and more convenient; the mounting plate is arranged and rotates on the mounting seat through the pivot, so that the angle of the machine body can be adjusted, reflection of a