Quick question about Neptune FMM jack size

[Adamc13o3]

What size jacks fit in the FMM? I want to get a float switch installed through my skimmer lid and connect it to the FMM for an auto shut off. I know that Neptune makes optical sensors but I am not sure an optical sensor in a skimmer cup will work due to foam. I think that a regular float switch should do the trick. Just need to know what type of cable lead to get. I know that I can always use a breakout box but I have spare ports on my FMM.

Thanks,

Adam

 

[CasperOe]

If you make this work, please let us know- this is interesting As for the jack size, 3.5 mm

 

[Varmette]

I have my float switches (for ATO) run through a breakout box and it works great