Remote switch to turn on/off POE IP Camera

[pilotg2 0]

Hello

 

I'm setting up a Hikvision ds-2cd2432f-iw IP Camera powered by a TP-Link POE injector. The injector has 48v.

 

I'd like to be able to remotely (with a control) turn the cam on and off when i'm in the room. For the experts out there would the following work?

 

Add one of these between the POE wall plug and round connector that plugs into the POE - http://www.ebay.co.uk/itm/1-Channel-AC-DC-12V-RF-Wireless-Remote-Control-Switch-Receiver-Transmitter-1-CH-/171247862697?pt=UK_Gadgets&var=&hash=item27df2b03a9

OR this one as i'm not sure about the voltage?

http://www.ebay.co.uk/itm/1-Channel-AC-220-240V-DC-Wireless-Remote-Control-Switch-Receiver-Transmitter-1CH-/171188670543?pt=UK_Gadgets&var=&hash=item27dba3d04f

 

I've ruled out the simple remote wall plug sockets as it seems, having contacted most of the manufactures, they do not resume power if the main power trips. There default power sate if off! This is no good for me as i'm away from home for long periods.

[Horizon 0]

Hi pilotg2.

 

None of those ebay auction descriptions match the photos! Download the instructions, and compare what's written on the (blue) relays with the ratings claimed in the auctions.

 

I'd go with the first choice http://www.ebay.co.uk/itm/1-Channel-AC-DC-12V-RF-Wireless-Remote-Control-Switch-Receiver-Transmitter-1-CH-/171247862697?pt=UK_Gadgets&var=&hash=item27df2b03a9 and use the "B,C=normally closed" relay contacts. The relay is only rated to switch 250VAC/30VDC. Ideally you'd use a relay with 50 or 60VDC contacts, but in practise you'll be fine switching the 48VDC POE because the Hik camera draws so little current.

 

The relay in http://www.ebay.co.uk/itm/1-Channel-AC-220-240V-DC-Wireless-Remote-Control-Switch-Receiver-Transmitter-1CH-/171188670543?pt=UK_Gadgets&var=&hash=item27dba3d04f is not rated for 250VDC, it's only good to 30VDC. The ebay description is wrong. Don't use this one, as you also need a relay that has "normally closed" contacts. And, being mains powered, it's riskier to experiment with, and a nuisance to mount safely into a box.