The disclosed is that an automatic releaser with wireless controls, comprising a housing, rechargeable batteries, wireless controls, an electromagnetic mechanism, and a release mechanism, which being characterized in that the housing is provided with a cylindrical configuration having a upper cavity and a coaxially lower cavity therewith; the wireless controls includes a remote control, a control switch, antennas, and a wireless control module. The electromagnetic mechanism includes an electromagnet and an iron core. The release mechanism includes a release pin, a movable sleeve and a release sleeve sequentially suited to one another from inside to outside. The preferred embodiments of the releaser and machines using the present teaching would have the following benefits: (1) the remote control is configured to control the testing procedure within the range of 500 meters thereby eliminating the inconvenience used with the supply power line to the test and improving the safety distance coefficient for the testing personnel; (2) the design of the movable sleeve can prevent the steel ball falling outwards from the movable sleeve; (3) the steel ball contacts with the peripheral rubber ring of the thru hole of the release sleeve while rolling forwards to it, then trends to move forwards to the movable sleeve under the action of the elastic force of the ring.