| 摘要 |
An electronic torque spanner includes a spanner body and an expansion member. The spanner body includes a driving head and a handle. A display and control unit and a receive port are install on the handle. The display and control unit connects with the receive port electrically. A sensor is installed within the driving head and connects with the display and control unit electrically to transmit the operation information to display and control unit. The expansion member corresponds with the receive port to launch the display and control unit. The expansion member and the display and control unit transmit data each other by the receive port. For difference purpose, the expansion member has the function of operation statistics, identification, anti-theft, or seeking.
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