| 摘要 |
PROBLEM TO BE SOLVED: To extend a substantial service life of a battery until a low voltage alarm is raised. SOLUTION: The radio selective calling device that is provided with a reception notice means that notifies of reception of a radio signal and raises a low voltage alarm denoting consumption of a power supply battery 9 when detecting a 1st reference voltage warranting a operation of a radio section 2 receiving a radio signal sent from a transmission station, is provided with a control section 3 that shortens a notice time by the reception notice means when detecting a 2nd reference voltage VR higher than the 1st reference voltage as to the power supply voltage of the power supply battery 9. |
