Radio Frequency transmitter/reciever

[haya.a]

Hello,
This is my first project that deals with radio waves so i wanted to keep it relatively simple.

Basically I need a push-button hand-held battery operated device which activates a beeper if the beeper is in a 100metre radius; it should work through bends and walls.

I have worked out that i need to a transmitter and reciever on a synchronised frequency for this to work(am i right?)
Could anyone tell me which device should i shud use to send a signal? and what do we use to recieve that signal? A PIC?

I just need a little push, i can manage the rest.
Thanks.

 

[Mike_2545]

This may be what you are looking for.

SparkFun Electronics - RF Link 2400bps Receiver - 434MHz

https://www.sparkfun.com/commerce/product_info.php?products_id=8946

 

[marcbarker]

Buy a wireless doorbell?

 

[haya.a]

@ Mike
Thanks alot that really helped...

@ Marc
lol... naa... i wanna build it myself as an experiment