Reddit reviews inShareplus 12V LED Strip Power Supply 2A 24W, Wall Mounted 12V Switching Power Supply, 110V to 12 Power Supply for LED Strip Light with 5.5/2.1 DC Female Barrel Connector to Screw Adapter

The maximum operating current for a Sonoff SV is 290mA (round up to 300mA for sake of simplicity). Most electromagnetic locks that I've seen in that form factor are around 0.4A (400mA) to 0.6A (600mA), so let's call it 0.7A (700mA) just to be on the safe side.

The theoretical maximum current you should ever need to power all four devices simultaneously would be

300 + 300 + 700 + 700 = 2000mA

Assuming that your 12V electromagnetic locks are ≤700mA each, you should be fine with a 12V DC 2A power supply.

If you use a screw terminal on the power supply (like the one listed above), the easiest way to wire them in parallel would be to have two red wires in the positive screw terminal, and two black wires in the negative screw terminal. Then just connect one red wire to each Sonoff SV's positive input, and one black wire to each negative input.

Parts:

1. $9 - 4" PVC Pipe from Home Depot
   
2. $8 - Bluetooth / Amp 50x50 - https://www.aliexpress.com/item/32913615792.html?spm=a2g0o.productlist.0.0.73dc3cfeH0W0DM&algo_pvid=9254ff6e-d924-43d1-8986-a81dc363cbbf&algo_expid=9254ff6e-d924-43d1-8986-a81dc363cbbf-44&btsid=5ec874fc-5013-44cc-8719-7fe5056e4789&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_52
   
3. $16 (x2) - Speakers - https://www.amazon.com/gp/product/B01GRG5O24/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
   
4. $26 - Tweeters - https://www.amazon.com/gp/product/B00009QOU5/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
   
5. $9 - Vinyl - https://www.amazon.com/gp/product/B00L9J4JRG/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
   
6. $13 - LiPo voltage protection - https://www.amazon.com/gp/product/B018TW0KN2/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
   
7. $12 - 1800mAh 3s (12v) battery - https://chinahobbyline.com/index.php?route=product/product&product_id=50
   
8. $6 - Switch - https://www.amazon.com/gp/product/B07PYVBZ99/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
   
   If you just want to plug it in without a battery, you can just use a cheap 12 power source like this one:https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS/ref=sr_1_4?crid=2T2QLKKWS5A2A&keywords=12v+power+supply&qid=1569933646&s=lawn-garden&sprefix=12v+power%2Clawngarden%2C160&sr=1-4
   
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   Total without lipo - $97, with battery power, add another $20. I bet if you get these parts of alibaba, you can save quite a bit of $$$

You're missing the power supply, most likely 12v.

So I just bought Smart LED Strip controllers, power adapters and a longish LED strip separately. That way you can kind of customize how many strips you want without going overboard on price. Here's the ones I bought if you're curious, but there are ton of options:

https://www.amazon.com/gp/product/B07BT5CRR6/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01GD4ZQRS/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00E0EVHYA/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

pretty much anything. the voltage doesn't matter so much as long as its within limits because you set the current limit on those with the trimpot.

i.e. something like this:

https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS/ref=sr_1_4?ie=UTF8&qid=1521471628&sr=8-4&keywords=12v+power+supply

Standard tip-positive, 1A minimum, 12V DC power converter. You can get those in any store that sells electronics. Something like this:

https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS

The plug will be 5.5mm outer diameter, and either 2.1mm or 2.5mm inner diameter. Any 12v wall wart that has the same plug and can output at least 1.5 amps will work.

For instance, if it's a 2.1mm inner diameter, this one will do the trick.

The rated amperage doesn't need to be exact, it just needs to be greater than the needs of the light.

You're may be paying many times more sourcing "locally" if you can't wait until chinese new year is over next month. On amazon anything that is 'prime' should be warehoused stateside


Search for water solenoid example
Compatible diameter tube for above example
and any relay board example.

Moisture sensors are literality just wires shoved into the soil. But beware of electrolyses degrading the metal, you can used galvanized nails or even pencil lead (carbon rods) instead

You shouldn't need a pump unless using a reservoir, but just in case 12V water pump example--note this has a bigger diameter hose connector you may be able to just shove a 1/4" inside and glue around for seal but look around at the different search results for matching hose diameters all around or possible legit adaptors


And don't forget the 12V power adaptor capable of powerint all that. ~2+A should be fine example

Very basic strip. Just use this: https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS/ref=sr_1_2?s=hi&ie=UTF8&qid=1526580259&sr=1-2&keywords=LED+strip+power+supply&dpID=411lxCnU%252BsL&preST=_SY300_QL70_&dpSrc=srch

Okay this is what I did. I purchased this plug: http://amzn.to/2AooZYE, and then wired it into a 12v wall wart also found on Amazon here: http://amzn.to/2B3ctKk. If you have any questions just let me know I am more than willing to help you out!

https://www.amazon.com/dp/B01GD4ZQRS/ref=cm_sw_r_fm_apa_i_Stw1DbY9KG075

I've used these on my last few lighted Marquees, works great if you've got the whole thing tied into a single power strip, or a current sensing strip

I think I'm on the same page now. So if the top fan is going to be on at 100% speed when it's on, it needs its own power supply. That will either be the UFO light (probably not) or a power adapter (most likely). The power supply you linked would work.

So If I buy this https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS/ref=mp_s_a_1_3?ie=UTF8&qid=1549896621&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=12v+power+supply&dpPl=1&dpID=41srjWjagkL&ref=plSrch and cut with a cissor the cable then plub the + and the - of the PC fan on this it will work without risks ?

this amazon 12V supply is a supply I see frequently recommended here.

if you want to adjust the speed of your fan(s) to limit air flow or noise then this adjustable power supply should do the trick.

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Do not listen to the guys saying you can pull 10 fans of a 2A brick, that's simply not possible. a 120x120mm PC fan draws in the area of 3~5 watts, while startup can be higher, 12 volts times 2 amps is 24watts so you can only power a maximum of 5 fans safely

Partly i worded my reply badly....

I was also asking if you had a power brick and should of asked you to send a pic of the cord and plug.

Sounds like you need 100v as bulbs (guessing 100, 110v,120 work in japan or 100v if different must be readily available.

A cheap transformer is available as well.

***you may have one laying around unused at home, it could of powered an old radio, charger, phone...whatever. Just look for output 12v dc and 1a ,1amp or more. You would need to splice the wires most likely.

They are identified by voltage and amps. You need a 12v transformer. Search that, pick one made for 100-120v in and 12v dc out. Your bulbs are 1watt each, 1amp rated transformer would po wet at most 12 bulbs. With amps rating you are paying for max capacity, 5 or more forks, but if you just need one, you are likely paying more than needed. Bigger would allow connecting multiple strands.

(Fwiw ignore this if want amps is current flow, for bulbs watts=voltage/amps a=volt/total watts... 12 1watt bulbs=12 watts. @12v is one amp total.....)

Here is $8 100v to 12v 2amp transformer, with adapter to screw in small wires for the bulb at amazon.

InShareplus 12V LED Strip Power Supply 2A 24W, Wall Mounted 12V Switching Power Supply, 110V to 12 Power Supply for LED Strip Light with 5.5/2.1 DC
$7.99.
Link:https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/inShareplus-Mounted-Switching-Connector-Adapter/dp/B01GD4ZQRS&ved=2ahUKEwi4_cvkv5TjAhXJWM0KHZ5uBMcQFjAAegQIARAB&usg=AOvVaw23L4mtI47e-MVPyY15Hvvv

If your site and everything but bulbs are made for 100v, getting the right bulbs might be a nicer look. The wires need to be quite small to fit in the tiny adapter shown in the Amazon pic. You would have to cut the cord from the bulb strip, strip the insulation from the wire, put each wire in a screwhole and tighten. id Cover connection with duct tape, heat shrink, or electrical tape.

Other sizes in this transformer are available in other ams. 1a per 12 bulbs if you might add more.

I use one similar to this: https://www.amazon.com/dp/B01GD4ZQRS/

Do you already have an existing hardwired keypad with wires? If so, I used an adapter on one end (my wires terminate in my basement) like this one . I used a MicroUSB converter on the keypad end. You might need to make the existing hole larger. I used something like this.