A transmitter device for coupling to a vehicle and for conducting a transmission to a remote system includes a transmitter and a processing circuit coupled to the transmitter and having an input interface. The input interface is coupled to an existing user interface of the vehicle for receiving an input to cause the transmitter to conduct its transmission to the remote system. The input interface is coupled to a vehicle sensor for receiving a vehicle sensor input including a motion status of the vehicle. The processing circuit is configured to prevent the transmitter from conducting its transmission to the remote system unless the motion status of the vehicle indicates the vehicle is travelling at a speed less than a threshold speed.