# Joulescope JS220+ Joulescope JS220+ Precision Energy Analyzer with Enhanced Accuracy: a limited-edition, performance-enhanced version of the JS220 with ±1 nanoamp accuracy. - [User’s guide](https://docs.joulescope.com/en/products/js220plus/guide/index.md) ([PDF](https://docs.joulescope.com/en/products/js220plus/js220plus_users_guide.pdf)) - [Datasheet](https://docs.joulescope.com/en/products/js220plus/datasheet.md) ([PDF](https://docs.joulescope.com/en/products/js220plus/js220plus_datasheet.pdf), [YAML](https://docs.joulescope.com/en/products/js220plus/js220plus_datasheet.yaml))