How about yearly accuracy validation of the tester? Do the accessories need to be calibrated?
The units are calibrated at the factory before delivery to your facilities.![](https://desk.zoho.com/DocsDisplay?zgId=684509952&mode=inline&blockId=ekut7f2a891b031a44515a2a17515324d5143)
We suggest verifying accuracy of the testers using the build in accuracy test in the application at least once a year or as per local PUC or company regulations to ensure that your measuring instruments always perform according to expected specifications and standards.
The accessories are calibrated at the factory.