Simple Radio control circuit knowledge needed

Hi,

I have a project where I have to remotely turn on a circuit which will power a motor from about 100m away, I just need some help starting off, because of the simple on/off task i not sure if i need a circuit with a microchip and if a simple transmitter receiver pair with do the job in my project.

Please help!!!!!!!!!!!!

As you can probably tell this is definitely not my area of expertises

**broken link removed**
**broken link removed**

What is cct. " B " for ???

In all radio communication systems, a transmitter is needed to send the radio signal and a receiver is needed to receive the radio signal. As you can see in the picture, the lower drawing is called 27MHz Receiver. The unfortunately-named Circuit B is the transmitter.