# Retrieve Data

- [Conduit V4](/http/retrieve-data/conduit-v4.md): Conduit V4 provides a minimal set of data, best used for applications that require values for updates where device data is already known.
- [Conduit V6](/http/retrieve-data/conduit-v6.md): Conduit V6 provides a full set of device data for each data point requested. Best used to register devices and update devices in other systems.
- [Conduit V7](/http/retrieve-data/conduit-v7.md): This guide provides detailed support for the API endpoint that supports multi-stage aggregations for time series data.
- [Using Conduit V7](/http/retrieve-data/conduit-v7/using-conduit-v7.md): API Parameters When timerange Applied and Valid, return the data from last timerange seconds. When timerange Not Applied or Invalid and fcdt & tcdt Applied and Valid, return the data from fcdtto tcdt.
- [Aggregation Features (Optional)](/http/retrieve-data/conduit-v7/aggregation-features-optional.md): Aggregations are used to transform the data before loading into a downstream application. It can be useful to reduce the amount of data transfer and apply simple calculations on the fly.
- [Common Issues & Troubleshooting](/http/retrieve-data/conduit-v7/common-issues-and-troubleshooting.md): The ConduitV7 API is complicated. Below are some common issues and troubleshooting tips to help you solve problems you may encounter while using the ConduitV7 API.
- [Usage Examples](/http/retrieve-data/conduit-v7/usage-examples.md): These examples provide a starting point and can be modified based on your specific requirements. Always ensure that you are using the correct parameters and their values for successful data retrieval