1/4″ Drive: ARM313-2A, ARM325-2i, ARM331-2i,
3/8″ Drive: ARM315-3A, ARM327-3i,
1/2″ Drive: ARM303-4A, ARM317-4A, ARM329-4i
3/4″ Drive: ARM319-6A, ARM321-6A
1″ Drive: ARM323-8A
Q: Display showing Non-Stop 0000
For product with angle measurement function, the 0000 means the internal gyroscope is performing angle self-calibration during power cycle. Place product on flat surface when powering up, the self-calibration will be finished in 2~4 seconds.
Angle self-calibration is NOT torque calibration. Angle calibration is automatic. Torque calibration can only be done manually with professional equipment
Q: Display showing 8888
Product will show 8888 if powered up by pressing “C” & “U/S” button simultaneously. it means Product is entering manual torque calibration mode. Press any 4-button to exit. Product will be back in normal operation.
** Manual torque calibration is ONLY for professional test lab. Improper torque calibration process may cause product non-operational and warranty voided**
** If you’re professional test lab and need to perform calibration, contact us for the special key sequence **
Q: Auto Shutdown
Product will shut down after 2 mins in idle. Press any button or do a torque will reset timer.