Euhm sorry but an empty square isn't really an accurate way to represent a connector to me.
All I ask for is to have pin numbers and description of each pin function. <-- Edit: oh btw, they do exactly that for every single other connector (excepted the RJ45 one which is understandable as it's for a proprietary com anyway) so why not this one?
And when a pin is labelled "H" (and probably another one labelled "L") you can be pretty sure you can use the input with a bit more than just a dry contact, else individual pins wouldn't be labelled and you would just have a "remote contact" label for the whole connector.
I don't want to do something different than the manual instruct. I just want some spec on this rather obscur input so I can advise
@Solarfun4jim properly.
Also, knowing if the input is isolated is very important, even for a less technical end user.
And how comes the manual of a cheap BMS is properly doing that (we know the ouput is: not isolated, common ground, 12 V, 2.5 A max, and it's polarity on the drawing showing individual pins; in other words we know everything we need to use the ouput properly) while Victron one isn't (short the left and middle pins of this square thing to turn on the inverter)?
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@Solarfun4jim if you can take a photo of the connector and its surroundings I can try to reverse-engineer the circuit to have a more definitive answer if you want