I’m hoping there are some smart electronic engineering people here that might be able to tell me if I need a relay for this level sensor or can I plug it straight in the apex breakout box. If I do need a relay I’ll need help choosing one and setting it up.
it looks like you will need a power supply for this. that sensor looks like it works the same as neptunes optical sensor on the fmm.
if you want something to hook directly to the break out box you might want to look for a float switch.
something like this