# Holybro H-RTK M8P GNSS
The Holybro H-RTK M8P GNSS (opens new window) is an RTK GNSS module series for the mass market. This family is similar to the H-RTK M9P series but uses the smaller, lighter, and less expensive M8P u-blox RTK GNSS module (which still provides far superior position resolution than previous generations_.
There are three models of Holybro H-RTK M8P to choose from, each with different antenna design to meet different needs. Refer to the Specification and Model Comparison section for more details.
Using RTK allows PX4 to get its position with centimeter-level accuracy, which is much more accurate than can be provided by a normal GPS.
- H-RTK M8P (Holybro Website) (opens new window)
- H-RTK Accessories (Holybro Website) (opens new window)
RTK设置和使用在px4上通过 QGroundControl 很大程度上可以即插即用 \ (请参阅RTK GPS 更多信息)。
All H-RTK GNSS models come with a GH 10-pin connector/cable that is compatible with Pixhawk 4.
The cables/connectors may need to be modified in order to connect to other flight controller boards (see pin mapbelow).