PROBLEM TO BE SOLVED: To realize a remote controller device for a water heater that can use an information processing terminal that can transition to a function restriction mode as a component and can easily operate the water heater quickly when the information processing terminal is installed in a holding device.;SOLUTION: In an information processing terminal 110 of a remote controller device 100, a control device 112 (control unit) switches the information processing terminal 110 to a function restriction mode when a predetermined restriction condition is satisfied, releases display restriction in the function restriction mode when a predetermined restriction operation is performed on the information processing terminal 110 in a state where the information processing terminal 110 is not held by a holding unit 150 during the function restriction mode, and allows a water heater 1A to be instructed from the information processing terminal 110 even in a case in which the release operation is not performed when the information processing terminal 110 is held by the holding unit 150 during the function restriction mode.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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