Reddit mentions of JacobsParts Manual Inline DC Power Switch Extension Cable Male to Female 5.5mm x 2.1mm Barrel for LED Strip Light and Other Low Voltage Applications

I have these plugged into them:

https://www.amazon.com/gp/product/B00R1YKNT6/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

So 5.5x2.1 is correct.

Get these switches instead, much easier:

https://smile.amazon.com/gp/product/B00R1YKNT6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

There really isn't any benefit at all in using the official power adapters. FWIW I have one of THESE between my official adapter and each of my base stations so I can physically turn them off on the wires I keep set up in my home.

I also have 2 each of THESE to power the base stations when I take my set up off-site to run demos and they work perfectly. I also use 2 of THESE to extend the reach of the after market cables, in case there isn't an outlet right by the base station.

I've used these parts since I first got my Vive (I was in the first batch of pre-orders) and it works great!

I bought 2 of these this week and literally just plugged them in yesterday. I found them recommended somewhere on reddit I think, and they claimed the manual recommended them.

https://www.amazon.com/gp/product/B00R1YKNT6

Since you ran your wires in the wall, I dunno how useful they'd be, but I figured it might still be useful to you.

This is from the Vive pre/dev kit but should still be relevant....

http://media.steampowered.com/apps/steamvr/vr_setup.pdf

pg. 8

EXTRA STUFF NOT INCLUDED BUT HANDY
APPENDIX
FOR BASESTATIONS

• Basestation power cable extension:
  If you were disappointed that the included ones were too short
  http://www.amazon.com/NEEWER%C2%AE-Dc12v-Extension-Security-Camera/dp/B00H5GVZBU/
  (any 12v power extension will do)
  

• Basestation inline cable switch
  

  so you can leave the basestations high up but switch them off at cable
  http://www.amazon.com/JacobsParts-Manual-Extension-Voltage-Applications/dp/B00R1YKNT6/

http://www.amazon.com/JacobsParts-Manual-Extension-Voltage-Applications/dp/B00R1YKNT6/

You only need to turn off base station "B". "C" will turn off automatically when "B" isn't visible.

The headset should turn off automatically after a few minutes. It has a proximity sensor that can tell if it's in use.

https://www.amazon.com/gp/product/B00R1YKNT6

I used one of those on my old Printrbot Simple Metal. Just measure the barrel of the plug and get a switch that will fit.

You can add a set of switches for them for $10.

I would instead get a roll of the newer/larger SMD6530 LED's (25 lumens per LED) ($10.99), plus power($5-10) and a simple on/off switch ($4-5).

Brighter, cheaper, and you have the remaining 14-15 FEET of LED's for under shelf lighting or other projects around the house/garage!

Great also for gun safes, garages, etc. You can put a rotary dimmer, or IR motion detector on them as well!

GL!

https://smile.amazon.com/JacobsParts-Manual-Extension-Voltage-Applications/dp/B00R1YKNT6

I use that on the "B" lighthouse. When that one goes off, "C" follows suit a few moments later.

I bought a pair of these cables to extend the power cables for my lighthouses since they were too far away from any power outlets. (At first I used battery packs, but those proved to be flaky).

https://www.amazon.com/gp/product/B018RW057K

What I would REALLY like is something like the JacobsParts Manual Inline DC Power Switch for the Lighthouses, rather than for the HMD power line, that way I can go and flip the switches rather than unplugging them every time I'm done. I use those remote power switches for other things in the house and I'd rather not have overlapping signals.

I just bought these today since the bluetooth on/off function is not working for me.

http://www.amazon.com/JacobsParts-Manual-Extension-Voltage-Applications/dp/B00R1YKNT6/

They work great and are easy to set up! Cost maybe 10 bucks for both