... protection DTEW series Single Speed Electric Torque Wrench:1. Wide voltage motor: 200V-240V, 50-60HZ, 1Ph ,AC;2. ... , stop automatically when reach the torque.3. Digital torque control system, output precision: ±3%, repeatability: ±1%;4. 3600 swivel handle ... . Electronic anti-over-torque system to protect the gears and mechanical system effectively7. Compact, durable gear system; high ration of torque ...