Working machine

A working machine comprising:

• a main body portion;
• a working device mounted on the main body portion so as to have a changeable posture, the working device including one or a plurality of replaceable replacement portions;
• a posture sensor which detects a posture of the working device;
• one or a plurality of transmission devices disposed in the replacement portions for transmitting a radio signal including identification information of the replacement portions;
• a receiving device disposed in the main body portion for receiving a radio signal transmitted from the transmission devices;
• and
• a determination portion which determines whether the working device is at a receivable posture which allows the receiving device to receive the radio signal or the working device is at an unreceivable posture which does not allow the receiving device to receive the radio signal based on posture information detected by the posture sensor, wherein
• when determining that the working device is at the unreceivable posture, the determination portion sets the receiving device in a power saving mode in which the radio signal is unreceivable, and when determining that the working device takes the receivable posture with the receiving device being set in the power saving mode, and returns the receiving device to a normal power mode in which the radio signal is receivable.