LOSS PREVENTION AND LOSS FINDING DEVICE

PURPOSE: Personal belongings loss preventing and finding apparatus and a control method thereof are provided to easily find a product which does not seen like a car key, a cellular phone, and a remote controller. CONSTITUTION: A main terminal(MD) is formed in order to be accepted in the purse of a user or worn in waist and transmits a radio frequency signal in which a main native code is included at every fixed cycle by wireless to a short distance. The main terminal determines whether a terminal is registered or not by deciphering a sub native code from the radio frequency signal which is transmitted from sub terminals(SD1-SDn). The main terminal outputs warning tone when the radio frequency signal in which the sub native code is included is not received from the sub terminal for designated time. A plurality of sub terminals is installed to personal belonging in which user carries. A plurality of sub terminals deciphers a main native code from the received radio frequency signal and determines whether the terminal is registered or not. The radio frequency signal in which a sub native code is included is wirelessly transmitted to the main terminal as an answer signal when the radio frequency signal in which the main native code was included receives.