Power Supply Controller, DC 12V 24V 36V 48V 10A Power Supply Battery Controller Emergency Automatic Switch Module

hello well at least two of my viewers at least two definitely one possibly another one has inquired about this a 12 volt backup switching relay device i want me to bring you in for a closer look so basically what you have here oh these wires are quite stiff so basically what you have here is these two wires are input from your 12 volt power supply and these two wires come from a 12 volt battery if you can see in the board it says dc negative dc positive battery negative battery positive this runs out to your output which goes to your heater and this is a relay that switches i'm not sure if it switches it probably switches the positives but just now uh it's connected to power supply which is on so to show that it's on uh the power supply we'll go over the can you even see the mirror display in the video can you can you can you right so from the power supply there is two point three volts