# Accessories Integration

- [RTK Base Setup](https://arcsky.gitbook.io/x55-public-knowledge-base/accessories-integration/rtk-base-setup.md): RTK-base technology provides a more accurate position estimate than the regular GPS systems onboard the X55. Its ideal accuracy can reach up to cm-level, which greatly improves the precision of flight
- [LW20 Rangefinder Setup](https://arcsky.gitbook.io/x55-public-knowledge-base/accessories-integration/lw20-rangefinder-setup.md): Rangefinders allow more precise altitude tracking and terrain following. To install the rangefinder, please follow the guide below.
- [Bottom Mount Battery Module](https://arcsky.gitbook.io/x55-public-knowledge-base/accessories-integration/bottom-mount-battery-module.md): This accessory allows the user to mount the payload on the top side of the X55 for a full 360 sky view. To install this accessory to the X55, follow the steps below:


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