To easily make changeable the transmission timing of a rear end signal depending on an operation mode.

This device is provided with a stacker part 2, in which objects 1 to be supplied such as printing media, paper money, and coins are housed so as to be stacked, and the stacker part 2 is constituted of a residual amount detecting part 3 specific to the device for generating a signal for requesting the supply of the objects 1 to be supplied, when the residual amount of the objects 1 to be supplied reaches prescribed amounts, and a variable detecting part 4 for allowing an operator to vary the generation timing of the supply request signal. For example, early communication of a rear end signal can be set in operation on weekends than on weekdays by taking account of a required time until the supply of objects to be supplied. In this case, all operation modes can be set in the variable detecting part 4, and operations only with the residual amount detecting part 3 specific to the device can be set by canceling the variable detecting part 4 in operation on weekdays.