|Mechanical locks as well as electrical locks are exposed and can be broken by robbers. We here need a lock that is not exposed on outside but can lock a door from the inside. Now this lock can be still be opened by authorized user and not anyone else. Now this allows for a remotely operated secure door opening system that can be used for domestic as well as commercial usage. The proposed system puts forward a secure door opener system that can be used for a variety of purposes. We operate a lock that is locked on the inside through rf signals. Only a specified encrypted rf signal is needed to open the door. The receiver unlocks the door only when it receives specified encoded signal. We here use rf module along with microcontroller to demonstrate the system working.