Should the Cable Connector be an RJ11 or an RJ45?

We use this link to find the most up to date docs
shop.switchdoc.com/products/skyweather-raspberry-pi-based-weather-station-kit-for-the-cloud

This document indicates that the rain bucket and anemometer terminate in RJ11
www.switchdoc.com/wp-content/uploads/2019/07/SkyWeatherAssemblyAndTesting-2.pdf

This document indicates to get an RJ45 pass through for the enclosure to get the rain bucket and anemometer data into the box.
"Anmbest Panel Mounting Shielded RJ45 Waterproof Cat5/5e/6 8P8C Connector
Ethernet LAN Cable Connector Double Head Coupler Adapter Female to Female with Waterproof/Dust
Cap amzn.to/2X9YAVx"
www.switchdoc.com/wp-content/uploads/2019/06/SkyWeatherBoxAndWeatherProofing1.5.pdf

These don't seem to match up (RJ11≠RJ45). What conceptual error are we making here.

Thanks!