It is a superregeneration wireless receive module with       VHF/UHF.It use rolling code to code between transmit and receive,and it has 4000000000 code address,the security is high.Technical Parameter:

Operating frequency:315mhz-433mhz

Operating voltage:5v

Receive sensitivity:-105dbm

Modulate mode:ASK

Receive distance:80mi

Typical application:

Guard against theft and alarm hoster,electric curtain,garage/gate remote control,electromotion door and so on.