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Technical and safety review (October 2026): this is a 2018 setup for specific hardware; it is not a universal PoE design. A 48 V PoE injector must not be connected directly to a device that expects 5 V USB power. Verify the injector/splitter compatibility, applicable PoE standard (or passive wiring where relevant), correct output voltage, connector polarity, current rating, insulation, and cable suitability before connecting anything.

The original article reports that a particular wall adapter created an unsecured Wi-Fi network; isolate or secure any network interface before deployment. Products and purchase links may no longer be available. Do not assume electrical compatibility based only on a similar-looking connector.

If you have a iSmartalarm Spot security camera, and you haven’t the posibility to bring electricity to it, you can use this tutorial so it will be fed with the electricity that cames by a Ethernet (network) cable. This technology is commonly named «Power Over Ethernet» (POE).

At this tutorial is needed:

• A POE injector: 48V 1,25A. You can find it at Ebay
  

  

  

  

  Also the VDE power cable is not usually included, but you can find it easly at Ebay, Amazon…
  

• A wall POE plug. This is a key issue, and not all of them are valid. For instance, 300Mbps in Wall AP for hotel WiFi project,Indoor AP 802.11bgn WiFi Access Point,POE Power Supply 100M RJ45 Port USB Charge Port did NOT work for me.
  A valid one was 5V1A USB port 450Mbps in Wall AP for hotel WiFi project,Indoor AP 802.11b/g/n WiFi Access Point,POE Power Supply, 100M RJ45 Port, which has enough power to turn on the iSmartAlarm Spot camera.
  
  

  

  

  

   

  In the back the wall POE plug gets connected a powered RJ45 (electricity and optionally data). It splits the received signal and serves it in the front: a RJ45 plug with only data, and a USB plug with only electricity.

  Notice USB power supply should be 5V/1A as described.
  Update: this wall POE creates a unsecured wifi network called «Guest_2.4 Ghz». Check its documentation to deactive it, or secure it. A quick workaround is not connecting a data cable in the POE injector, only a cable to transfer power.

• A high quality CAT cable. As we are going to transport electricity and data in the same wire, and for avoiding shorcircuits, fires, electromagnetic interference or others, do not hesitate buying a premium wire for this purpose. Your time is money. Also is important to use only one wire, not plugin 2 or more, so look for one which measure can satisfy your needs. For example this IBRA® 10M Cable de red Gigabit Ethernet Lan CAT.7 at Amazon.

• A short microusb cable. For not having plenty of meters of wires, having a short wire is the most discreet and elegant solution.
  

With all this items, creating the POE solution is easy:

1. Plug the power injector to the wall, and to an end of the RJ45 cable.
2. Plug the other end of the RJ45 wire at the rear of the wall POE plug.
3. Plug the microusb to the wall plate.
4. Plug the iSmartAlarm Spot camera to the microusb.

And you’re done.

Note: if you want to transport data a part of electricty using the RJ45 (what should happen in most of cases), plug the data cable in the second socket of the power injector.