A crop discharging device, such as a discharge spout for a crop chopping machine, has a crop input end mounted for swiveling about an inclined upright axis and for pivoting vertically about a horizontal axis. A timed switch is triggered by the output signal of the comparator when the measuring signal exceeds said reference value, the first circuit element, activated by an operating signal, being disconnected by the output signal of the timed switch, until the measuring signal exceeds the reference value again. A flag is established according to the first motion detection result, and a third video signal generated by delaying the first video signal is output. The bioelectricity controlled switching circuit is configured to trigger a ground switching circuit in the touch detection circuit unit which outputs to a multifunction control circuit unit. The alias information can then be sent to the other IP-enabled phone or to another device associated with the calling party.