Electric torque wrench, adjustable setting torque, accuracy ±4%, stable torque output, not easily affected by voltage fluctuations and long-distance cables, suitable for construction site applications. Continuous rotation without impact, the wrench automatically stops when the preset torque value is reached, and the efficiency is much higher than the intermittently driven hydraulic wrench. Support generator power, field environment, stronger. Numerical control board for torque setting, digital display . Support torque mode, torque + angle mode. The tightening result simulates the judgment and follow function. Automatic memory mode. Any value of torque can be set within the torque range. Using multi-stage gearbox, high reliability and high stability. Supports multilingual operation mode. The torque digital 1Nm adjusts and displays the torque and the working state parameters of the wrench. Background torque calibration function software compensation function. Human-machine interface design is intuitive and convenient, and the LCD screen directly displays the torque value. With double overload protection function, electronic control torque system and torque overload clutch design, effectively improve the service life of transmission parts and carbon brushes. Overheating protection function. Standard reaction arm. Optional Bluetooth module or WIFI module, torque gateway system, support to connect the host computer system and MES management system through the Internet of Things. It can support cranking and door valve locking, with automatic recording of laps and reverse torque control functions. The anti-reaction arm is locked to realize the unloading function. User (operator, administrator) hierarchical function management. Supports the installation of a hoisting system, making it safer to operate at heights.