Check the lines on the quote to the boxes marked in drawing

The Optional Remote Communications Package which interfaces with the ST107 can be added.

Look at these two blog posts on installation:

https://safiery.com/blog/lowest-installation-costs/

https://safiery.com/simple-shunt-installation-caravan-motorhome

Configuration Guide

SC301

SC25Q

Main Battery ✔ (internal) ✔ (internal)
Main Battery Shunt (either this or Inverter below)
High Current Dedicated Shunt (like inverter)
Second Battery ✔ Voltage for U1 or U2
Tank with Voltage sensor ✔ Voltage for U1 or U2
Pressure Sensor ✔ Voltage for U1 or U2
AC Current Sensor ✔ Voltage for U1 or U2

Cabin Air Quality
(Either Dust or Co2 Sensor)

✔ Voltage for U1 or U2
Solar Performance Sensor (not solar measurement) ✔ Voltage for U1 or U2
Pitch (Forward and Backwards) ✔ Voltage for U1 or U2
Roll (Sideways) ✔ Voltage for U1 or U2
Current Measurement to 25A per channel (combine channels for greater than 25A circuit)

Up to 4

C1, C2, C3, C4

Tank Measurement Ultrasonic with Resistance input
     
Temperature Input (add Fridge Sensor for Fridge, Battery sensor included in SC301) Included