To provide an inexpensive remote control transmitter wherein a user can properly recognize the state of the remaining capacity of a battery.

In the remote control transmitter which wirelessly transmits a control signal for performing a prescribed mode at a location apart from a main body apparatus for performing the mode, when the output voltage of a battery 1 reaches a prescribed voltage or a level below, the transmitter delays the transmission timing of the control signal outputted from a signal control circuit 4 by a prescribed time from the input operation time of an operation key 2 to inform the user that the remaining capacity of the battery 1 is small.