Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Do I need a PoE injector for each IP camera I need to connect and power?
Document: I needed and inexpensive PoE injector to work with an IP camera. This injector worked out of the box with no problems. I'd buy one again if the need arose.
I bought 5 of these to power my IP security cameras. I liked the small size (about the size of a pack of playing cards). I also purchased a BV-Tech POE-I100 Single Port 19W PoE Injector which is about 3x as long (3 packs of cards end to end).The TP-LINK devices failed to operate my higher performance cameras, but work just fine with my lower resolution cameras. I only need high resolution to read license plates.
I am using these at a local theatre where I do volunteer work. We had a PoE switch donated and I wanted to use that for the wireless APs. However, the APs don't have PoE capability. I purchased these units so I could use PoE then connect the output of the splitter to the 12v input. If you have the same need, be sure to double check the power output and power draw requirements. I was using Cisco Valet M10 APs and everything worked just fine.
I bought this injector to power an IP camera and it performs very well. There isn't much to say other than it was well packed, had protective film on the case and includes a cable to plug into a hub/switch/router. PoE sure beats having to run power to remote locations!
I use the TP-LINK PoE injector to power both an IP camera and a Cisco phone, and it works well. Small, compact size, &#34;good enough&#34; construction and just a matter of plugging in the Ethernet cable and a power cord. Up and running in under a minute, and it just plain works.Definitely recommended as an inexpensive way to get PoE to your devices.
I was looking for a small yet qualilty PoE injector for under $40. This one fit the bill. LEDs are useful. The unit does get warm to the touch but nothing I would worry about. The one thing I wish it had was some mounting lugs or something. It is currently just dangling, but that can be easily fixed by using some velcro wrap. I am using this to inject power to a Dahua IP Security Camera. Have been using it in my garage for ~4 months without issue.
I only have one POE device (a security camera), so I went with this single injector solution. Works exactly as promised, which is as simple as it could be. Connect the injector to your router, connect the injectors AC wall adapter, and then connect the device via an Ethernet cable. Viola, the device gets both power and network from a single cable. Its been running for about 60 days without any problems for me. I wish my other five security cameras could be fed with POE too.
I've been using a couple of these to power some PoE cameras which I've put up around my property, and it &#34;just works&#34; - none have arrived dead, and there haven't been any complications after having them in place for several months.Next time I have need for a PoE injector, I'll probably pick up another one of these
I work from home, and I'm using the injector adapter to power a Mitel 5330e VoIP phone which is PoE only. The adapter works beautifully, and I'm quite happy that I found an option that was significantly less expensive than a good quality PoE switch which I didn't otherwise need.
Bought this to power a POE (power over ethernet) IP Camera made by Dahua, and this was one of the cheapest I found on amazon. It came very well packaged in a big looking box, but don't let that fool you on size. When I opened up the package and took out the injector it is actually very tiny. The size is equivalent to shorter then length of an iphone 4, but its height is about (2) iphone 4's stacked on top of each other.
Answer: Yes. You can get a PoE switch, but they are more expensive.