DTW-400 features an integral/adjustable LCD display for convenient torque readings. The unit is designed for screw tightening torque verification and measures in Peak, Real Time, and Peak Down measuring modes (selectable). The DTW-400 has an accuracy of ± 0.5% F.S., ±1 LSD and has programmable setpoints that provide both an audible beep and green/red LED indicator for uniform tightening or GO/NO GO testing. In addition, it features a programmable counter that minimizes assembly errors by identifying mis-tightening and/or defective screws. Use the 400 internal memory for peak data recall or USB download for SPC. Model DTW-400 is sold in kits which includes the tester/screwdriver, stepless one-way clutch adapter, Phillips tips, AC adapter/charger and carrying case.