XINGYHENG 50Pcs 25Pairs 2.54mm 2PIN Female and Male Connecting Plug with Red Black Terminal Connector Wire Cable 200mm Compatible with JST XH

I brought these to connect the 24v fans to replace the ones that came with the printers so I got 2 24v 3d printers 1 lk5 pro 3d printer and 1 Olaprin 3d printer and both of them use 24v part cooling fans!

I use these for 3d printers and other electrnoics and they are a time saver for quick repairs if you dont have a crimper and the JST connectors to make your own!

I have a Creality CR-10. I used these pin connectors to bypass the aviator plugs for the thermistor. I added a plug in the back of the control box and now when a thermistor fails I just swap out a new one (thermistors come with two pin connectors also). Plug and play. No need to open the control box. No soldering thermistor wires.

These are the same size as the Just Plug system for model railroad lighting. As noted, the polarity is reversed - you can work with it or flip the wires as I did. These allow you to plug your own LEDs into the light hubs or make your own connector cables. Either way much cheaper than buying from WS.It took me about 35 minutes to flip the wires for 25 male plugs; vey easy to do. Would have preferred no problems, but it is not a major issue. This saves about $5 per light as opposed to pre-manufactured lamps in fancy rigid plastic tubes - take your pick!!

Got these for some Arduino projects, including one using a WEMO battery charger shield. BE CAREFUL to check the polarity of the connection. On the WEMO shield, the female connector on the board is wired in such a way that these connectors end up with black as + and red as ground. Not a big deal but you can fry your board if you don't check and make sure to put the leads where they belong.

Easy to wire onto existing HO train system . They are bright enough to illuminate building in display.

I used these to add a socket and plug to my 3D printer hot end fan. Now, to put in a new fan, I don't have to run a long wire lead back through the whole system, I can just swap it out at the business end.

If you need and easy extension this saves you the time of having to make one.