pl some one guide me to use 434mhz tx for opening main door

 

I built one years ago using these

http://www.laipac.com/easy_434a_eng.htm

http://dlnmh9ip6v2uc.cloudfront.net...2MHz_ASK_RF_Transmitter_Module_Data_Sheet.pdf

and to encode and decode the signal use these

http://robokits.co.in/shop/index.php?main_page=product_info&cPath=14_15&products_id=76