PICO One set is perfect for you if you want to monitor 1 main battery or battery bank, 1 additional starter or auxiliary battery, and up to 2 tanks or temperatures.
It features two main devices. PICO battery monitor that displays data about batteries, tank levels, temperatures, fridge, solar, it helps you level your campervan, and even includes a barograph.
The SC303 shunt, which is included in this set, allows for a continuous current up to 300 amps. It has 2 resistance and 2 voltage inputs, and 1 socket for a temperature sensor.