Is the WattsOn necessary to use or can I use another device?

Yes, the WattsOn should always be plugged in, even if you're already using another device for your P1 port. Here's why:

1. Direct link to the Blue Current app The WattsOn ensures that you:

✔ Get real-time insights into your usage through our app
✔ Receive personal advice to save smarter 
✔ Get automatic updates for optimal operation

2. Simple splitter function Via the "P1 OUT" port, you can continue to use a second device. This way, you don't have to specify any functionality.

3. Accurate consumption data for you and us
✔ You can see your usage in detail in the app
✔ We can advise you better on your monthly rates and savings

Installation tip:
Connect the WattsOn to "P1 IN" and your other device to "P1 OUT". Don't forget to remove the protective cover from the OUT port with a screwdriver.