Abstract: An air flap device, preferably for use in motor vehicles, comprising a housing that defines a flow passage opening, at least one air flap that is accommodated movable on the housing such that by adjusting the air flap relative to the housing the effective flow cross-section of the flow passage opening can be changed, a heat source arranged in the air-flow direction behind the at least one air flap, an energy source that is separate from the heat source, and at least one controllable flap actuator that can be controlled by a control unit (20) which has an energizing connection to the separate energy source, for adjusting an air flap relative to the housing. In this context, at least one automatic flap actuator is also provided, which is supplied with thermal energy provided directly by the heat source for adjusting an air flap relative to the housing.

Abstract: A remote change of status signal device comprising a central unit, a power supply, at least one sensor for detecting a change of status in that which is being monitored and sending a signal to a transmitter, the transmitter being electrically connected to the sensor and power supply for transmitting a signal in response to the change of status, a signal broadcast means electrically connected to the transmitter for broadcasting the signal from the transmitter and a portable remote receiving and signaling device for receiving the broadcast signal and alerting the user of the device to the change of status.