UCTRONICS DC 9V 12V 24V 4A Variable Power Supply 5-30V to 0.6-30V Adjustable Buck Boost Converter, Portable Bench Constant Voltage Current Stabilized Regulator Module

all right uh here's my latest uh item from banggood uh let's see here let's let's measure it it's a um a power supply a little knob and has a has a display so it is about 80 80 by 40 millimeters and about 40 millimeters deep now it has a little fan on the back um which is a temperature control fan it doesn't turn on until it needs to be which is really nice um let's see it also claims to be buck boost so i guess that's why there's two two inductors one to take the incoming and boosted up some high voltage and then some take it down to whatever you need it set to so that's why i was really really interested i thought that i would um oh i can't find the can't find the battery but you know this um uh breadboard that i built here with a uh a battery solution i thought oh hey i could build a whole bunch of um you know projects with with battery power and i thought well be really nice to have