External relays

[Nikola]

Dear,

Why add external relays if the controller A32 pro has its own internal relays?

[lulu01]

The built-in relays will have a longer life, especially if you use high currents for long durations. Even more so when high inrush current devices - for instance, poor quality LED lights will 'fry' the built-in relays very quickly and you will need to replace them. Speaking from experience, and wishing I knew that when I was still planning my project...

[admin]

Dear,

Why add external relays if the controller A32 pro has its own internal relays?

use for large current load. internal relay MAX 7A, usually use 3.5A load is better. so use extend relay will protect the internal relay and easy for repalce or repaire.because extend relay is removable.