Looking for a reliable safe POE (Injector & Splitter) KIt for 100/1000 Ethernet.

Please advise what do you want to connect on it, it's for personal or use or business?

In case for business why don't you search POE Switch

Gig POE injectors work fine, They're used all the time with Access points, but depending on what you're actually looking to connect to them, your mileage may vary...

Could you provide a little more information regarding what you're trying to do / connect??

why don't you search POE Switch

I agree with Elie Matar in regards to looking at POE switches.
However if you're only looking at one or two devices it wouldn't likely be worth the expense

Ken

POE  (Injector & splitter) Kit

Not really sure what you're trying to do here, more details would be helpful

That being said, most injectors have 1 port which connects to the network, and 1 port which provides power and network connectivity to the device you're connecting it to.

I don't know that I would advise piggy backing multiple devices on one injector

Ken

POE is variable depending on what voltage you want at the other end.  48 volts and 24 volts are semi-standard and these are what can be expected from a POE-enabled switch.  However, injectors can deliver any kind of voltage they want, AC or DC, depending on what's plugged into the injector.

Personally I'd not want to run POE on gigabit ethernet.  Gigabit ethernet uses all four pairs which means the power is not going over unused pairs, and having significant power trying to share conductors with a gigabit signal seems an invitation to disaster.  Pull another wire or use a spare cable instead.  But ymmv.

"In a departure from both 10BASE-T and 100BASE-TX, 1000BASE-T uses four lanes over all four cable pairs for simultaneous transmission in both directions ..."

Sorry for leaving out the details:  This for personal use in a residence where I want to use an old router as an access point, probably about 60 feet from the main router provided by the ISP.    I just thought if I could run the device via POE then I would not have to figure out how to run power to it.  (Either install a receptacle near the location or extend the 12v DC cable that comes w/router.)

"Pull another wire or use a spare cable instead. ..."  I was considering this for safety reasons.
This way I can just purchase one of the cheap passive POE kits and run the power on the 2nd/back-up wire, and never have to warm up the soldering-iron.

Thanks for the input,  I will go with this plan unless someone has a full-proof (and tested) way of running Gig POE with one cable ?

"I just thought if I could run the device via POE "
It sounds as if you are trying to inject power at one end and then strip it off at the other.  That's not the typical way PoE is done.  That is, the end device pulls off the power on its own.

If you are running on gigabit Ethernet, the power will be put across different pairs.  That is, there will be a difference in voltage between two pairs, not within the pairs.  Since Ethernet uses difference signals within pairs, the signal isn't affected.

PoE is quite reliable on gigabit Ethernet if you ensure that you stay within specs.  You may find it challenging to find a splitter that pulls the voltage off a gigabit Ethernet PoE configuration, though.

"It sounds as if you are trying to inject power at one end and then strip it off at the other.  "
Yes, you can easily find several products on-line that do this for 10/100 as kits, but not 1,000

Few examples:
BeElion,  axGear,  iCreatin:  From looking at the pics, may all be the same product, but just trying to show whats out there.  Looks like injecting on one side and stripping on the receiving side is done all the time.
Just don't see any really good options for Gig POE kits.

Thanks
Sid.

"I just thought if I could run the device via POE "
Nope all that you'd do is destroy the port that you plug the powered ethernet into.  Use a device that is designed for POE

So the simple / cheap ones wont work for Gig Speeds ? correct since they don't query the device as to what power the device needs..

https://en.wikipedia.org/wiki/Power_over_Ethernet

Just found these, Gig devices and they seem to have good reviews.
TP-Link, Premiertek,

The reviews state this is done frequently and works.
Has anyone ever used these ?

Conclusion:  POE was simple when it was 10/100 because several of the wires in the cable were unused.
There are several devices that advertise the ability to transmit power on 1000 (Gig) legs of a either-net, but they top out at 15 watts.  There seems to be another standard getting started labeled POE+ that can deliver up to 30 watts, but the devices are hard to find and not well documented.  Wikipedia has some docs on the subject, but I don't know how well its implemented.

Solution:  I purchased some 12v 5.5mm male/female pigtails and a roll of 16 gauge wire and intend to power the remote AP that way.

Thanks to all that provided input.
Sid.