In order to ensure that your Raytech instruments are running as smoothly and as accurately as possible, be sure to keep your firmware up-to-date. For further details or for help upgrading your firmware, contact our Support Group at 888 484 3779.
*Please Note: Uses H1-H2 X1-X2 for single phase readings. All other readings (3 phase) remain same. This version also allows use of the current software and fixes minor firmware issues.