Remote switching

[saltyer]

Can anyone out there help me?
I want to be able to switch on/off a DC electromagent remotely using either RF or IR. The system must be battery operated as I do not want to use mains as a power source.

[dx100uk]

there are lots of battery driven remote control systems on ebay

http://www.ebay.co.uk/itm/Wireless-Gate-Garage-Door-Opener-Remote-Control-Switch-Transmitter-/370716087833?pt=LH_DefaultDomain_3&hash=item5650669619

http://www.ebay.co.uk/itm/12V-4-Channel-RF-Wireless-Remote-Control-Switch-Receiver-with-Controller-K-/220889456343?pt=UK_Gadgets&hash=item336e099ed7

http://www.ebay.co.uk/itm/4Road-12V-Multi-function-Learning-Remote-Control-Switch-/270790353146?pt=UK_Gadgets&hash=item3f0c5ce0fa

dx