DEVICE FOR PREVENTING THING FROM BEING LEFT BEHIND

PURPOSE:To prevent a thing from being left behind by assisting the power of attention of a man by checking a receiving code and generating an alarm in accordance with a result of receiving strength check. CONSTITUTION:A receiver 20 provided on baggage, etc., receives a transmitting code from a transmitter 10 which its person owns, and whether it coincides with an instruction code from a receiving code instructing means 5 or not is checked by a receiving code check means 4. Subsequently, strength of the receiving code is checked by a receiving strength check means 6, an when a distance between the person himself and his baggage, etc., becomes large and the receiving strength becomes below a range set by a strength check range instructing means 7, it is alarmed by a bell 9 that the baggage is left behind through a bell sounding instructing means 8. According to this constitution for assisting the power of attention of a man, it is prevented surely that a thing is left behind.