Delinx 12V Power Supply, PC Fan Speed Controller, 100-240vAC to 3-12vDC 24W Adjustable Adapter With Splitter Cable, DC Female to 2 x 3/4 Pin, Multi-Functional

I recently finished installing & upgrading my structure mdia enclosure from a single Leviton 14” to THREE Leviton 42” Wireless Structured Media Center Enclosures & this involved the pulling, running & dripping of a few dozen more CAT6 cable (for data runs) amongst all of the coax & distributing the satellite feed as well as both outdoor antennas, cat6 (for phone & fax runs), 9.2.2 Surround Sound in the living room along with IR over cat6, RF send/receive antennas and Bluetooth repeaters throughout the home…—…My set up includes:• Harmony Elite in the living room• Harmony Companion for the master bedroom• 5 total Harmony One Touch (Guest Room, Office, Den, Game/Billiard Room & Garage)• Harmony Ultimate Home for the back yardThen, there are the remote controls for my wife (she feels the Harmony is too complicated for her liking) so, for her, I’ve set up:• Sofabaton X1 in the living room• Sofabaton X1 for the back yard components• 4 total Sofabaton U1 (Master Bedroom, Office, Den & Kitchen)As for the Hub based remotes (Harmony Elite & Ultimate Home and Sofabaton X1’s), the actual hubs (including, in the case of the Harmony Hubs, a Harmony hub Extender attached to each one) - 2 each, Harmony & Sofabaton - are in the Media Closet with every other component.[i.e. Living Room 9.2.2 8K Receiver, 5 Blu-Ray players, 1x NVIDIA Shield, 1x Chromecast, 2x Apple TV, DirecTV boxes, primary router, guest network router, smart home/home automation router (it has its on network for obvious reasons), 6 incoming fiber optic internet connections, 3 incoming cable internet connections, 1 incoming satellite internet connection - used ONLY. As a failover connection), 2x 48-port & 2x 24-port Ethernet switches, 2x 48-port CAT6 Patch Panels & 2x 24-port CAT6 Patch Panels, 1x 2-port (FXS/FXO) Multi-Line VoIP Analog/ATA (for FREE home phone & fax service), 1x POTS Landline (run in & through the VoIP ATA), 2x 4-port, (FXS/FXO) Multi-Line VoIP Analog/ATA (to handle our VoIP business local & toll-free phone/fax/PBX lines), 2 back-up POTS/Landlines (for business failover, run in & through the VoIP ATAs), personal private cloud drive, 3x personal servers (home, email hosting, personal domain hosting), 6 bay RAID HDD Enclosure housing 24TB of drives, cell signal booster, 3x business servers (primary, email & domain), infrared distribution, etc. etc. etc. as well all the circuit boards, 110/66 blocks & boards, etc. etc. etc…—Heat & dust are the great killers of electronic components; regardless of one’s setup & total number of components, one should always be cognizant of heat (and it’s dissipation) and dust (plus it’s regular removal).Considering my setup relegates & places EVERY piece of equipment being located in a single closest - at the farthest back corner of the home (about 100 feet from the living room) - the need for that much greater focus & effort to minimize heat & dust is that much greater on my part.Without any sort of air flow, fans, cooling and/dust mitigation efforts, that closet can - and has - easily approached triple digit temperatures (especially in summer!). What is an obsessive compulsive, perfectionist, self taught 40 year old tech-geek to do?Well, short of spending thousands to have an additional cut of HVAC duct run to a vent in the closet for the central a/c to keep it cool, I had to focus on FANS and EFFICIENTLY arranging them…Enter the following:—**STEP 1) In addition to the below setup, I also shaved 1” off the top AND the bottom of the closet door. From there, on the inside of the closet door, at the top of it where I shaved off one inch, I mounted a “strip” of 4 total 75mm fans enclosed in one housing; this is orientated as an “Air Intake” to bring the ambient, HVAC Cooled, air from the hallway/house and into the closet.STEP 2) At the bottom of the door, on the inside of the closet, I did the exact opposite of the above step; that is to say, I mounted a “strip” of 4 total 75mm fans enclosed in one housing; this is orientated as an “Air Exhaust” to expel/push the warm/hot air inside the closet, outward into the hallway.**——• DEPLOYMENT OF 12V AC FAN POWER SUPPLY •After the steps above, I then set up the following:> I acquired:9x 50mm Case Fans9x 50mm blower exhaust fans6x 12V AC Fan Power Supply (THIS ITEM!)6x 3-way, 4-pin, Fan DC Power Splitter**The AC Fan Power Supply comes with a 2-way splitter but can handle additional fansoff the one main power supply; thus, I founda 3-way splitter that connects perfectly tothis 12V AC power supply & connected 1x 3-way splitter to each of the 6 12V AC PowerSupply’s so as to give me capacity to providepower to ^^18 total fans^^!From there, it was deployment time…• STEP 3) EACH of the 42” Leviton enclosures had 3 total 50mm case fans mounted at the very top - left, center & right -and leaving just the right anoint of room for the cable runs that are dropped into the enclosures from the top; each of the fans are orientated such that they are aligned with an opening/hole above them such that the fans then create a vacuum like effect that “pulls”/“sucks”/“intakes” the air from above & outside the enclosures, inward through the openings, downward through the fan blades and generating directional airflow, down & over the components enclosed.• STEP 4) EACH of the 42” Leviton enclosures had 3 total 50mm blower exhaust fans installed / mounted at the very bottom - left, center & right - leaving the perfect amount of room for each of the “drop-in” power supply’s or UPS Battery Bsck-Ups at the bottom of each enclosure; the exhaust blowers are orientated such that they “push”/“blow” the air downward, through a corresponding opening/hole in the bottom of the enclosure, to literally “exhaust” the ambient / component heated air out of & away from the enclosed components.For this deployment, for this use case, for my setup, this 12V AC Fan Power Supply works better than I could have hoped for!AVERAGE AMBIENT CLOSET TEMPERATURES• PRE-Door Fan Arrangement: 93.4°F - 100.1°F• POST-Door Fan: Arrangement: 59.8°F - 72.3°F• PRE-Enclosure Fan Arrangement: 59.8°F - 72.3°F• POST-Enclosure Fan Arrangement: 52.6°F - 68.4°FI NEVER EXPECTED SUCH RESULTS!!If you need something to do anything remotely similar to my usage OR if you need something for your own purposes, o strongly believe you’ll be pleased with this item! I can’t recommend d this power supply strongly enough!!!

Needed because I had a bunch of pwm fans laying around and a hot network room, along with a hot audio receiver stuffed into a mostly enclosed area. Plug and play, works great! Also works well with additional splitters allowing me to run more than just 2 fans! And very adjustable!

I used this to make an incubator. It controls my fans and works great for that purpose.

Bought this so I could feel like a NASA engineer. Ended up feeling like a raccoon who found a light switch.Spin the dial and you get everything from "mild suggestion of airflow" to category 2 hurricane in a shoebox. Build quality? Eh. It’s bravely hanging in there. Gets warm? So do I when I panic, no big deal.Would I trust it with my life? Absolutely not. Would I buy another so I can dramatically adjust fan speeds like I’m saving the world? 100%.4.5 stars. Docking half a star because it didn’t come with a warning label that says "You’ll Feel Way Cooler Than You Actually Are.”

Gets each of my fans to their maximum rpm...

Works great, voltage adjustment allows for desired speed of computer fans

Here's all one needs to know: this unit varies the DC voltage to 12 VDC fans (3-12 VDC) for "speed control" and DOES IT QUITE WELL! It's main use is to make "loud" PC fans "quiet" by slowing the blade rotation. The "Y" connector is quite handy for controlling TWO FANS AT ONCE.Operation:1) connect the device to the fan's power connector2) plug the unit to a wall outlet3) rotate the knob to turn it on ("CLICK!"). A GREEN LED indicates it's powered up.4) rotate the knob enough to get the fan blades spinning5) back-off the knob to get the required "quietness" from the fan (you'll find the fan is still moving "quite a bit" of air!)6) if desired, "tape down" the knob to keep it's setting from being changed7) Walk Away, leave the fan alone, and let it "do its' thing"If you need to change the fan speed later: undo the "tape down", re-adjust the knob "to taste", then tape down the knob again.I ** DO INDEED ** recommend this unit!

We have two 12DC computer fans which I custom mounted to the rear of our in-home bug zapper, as my wife's guinea pigs eat so many vegetables and fresh fruit, well, it's just inevitable that fruit flies will find their way into your home. Doesn't seem to be any way of avoiding this, especially when you walk into Trader Joes and see those little buggers buzzing all around the veggies.The computer were a bit too loud so we had to tune them down to about 1/2 speed and this 12 volt DC controller really did the trick.The dial is easy to read, fully adjustable, no issues with current distribution or lack of power, it simply works and works well.The guinea pig cages are now much quieter and the bug zapper is working much better than before this custom addition.I would absolutely recommend this controller.