A circuit device includes a D/A converter, a comparator that compares a temperature detection voltage from a temperature sensor unit with a D/A conversion voltage from the D/A converter, and a processing circuit that executes a determination process based on a comparison result from the comparator, and obtains temperature detection data as a result of A/D conversion of the temperature detection voltage, in which, the processing circuit determines the temperature detection data so that a change in the temperature detection data at a second output timing following a first output timing with respect to the temperature detection data at the first output timing is equal to or less than kLSB.

A circuit device includes an A/D converter that converts a temperature detection voltage from a temperature sensor unit to temperature detection data, and a digital signal processing circuit that executes a temperature compensation process based on the temperature detection data. The A/D converter, in an activation period, may execute a first A/D conversion process to obtain an initial value of the temperature detection data, and in a normal operation period, may execute a second A/D conversion process based on the initial value to obtain the temperature detection data.

A sensor-controlled key system for a motor vehicle for releasing an access authorization and for actuating auxiliary functions includes a control device having an electronic key device. The key system further includes at least one optical sensor device with at least one optical sensor element. The optical sensor element has a beam path that defines at least two observation regions B1, B2, Bn. The control device has a switching function that switches observation regions B1, B2, Bn on and off in dependence on a verified or non-verified access authorization.

A sensor-controlled key system for a motor vehicle for releasing an access authorization and for actuating auxiliary functions includes a control device having an electronic key device. The key system further includes at least one optical sensor device with at least one optical sensor element. The optical sensor element has a beam path that defines at least two observation regions B1, B2, Bn. The control device has a switching function that switches observation regions B1, B2, Bn on and off in dependence on a verified or non-verified access authorization.

A device for signaling including a top member adjacent to a bottom member, a button adjacent to the top member, a sensor adjacent to the top member, a radio adjacent to the top member, a microprocessor board adjacent to the radio, a battery adjacent to the microprocessor board, and a switch adjacent to the bottom member. A button slot and sensor hole formed through the top member. The button is received in the button slot and the sensor in the sensor slot. The microprocessor board further comprises a light emitting diode. The bottom member has a bottom recess and a switch slot. The switch is received in the switch slot. The top member has a sensor recess and a screw hole. The sensor is retained in the sensor recess. The bottom member has a screw recess. The radio, microprocessor board, and battery are slidably received in the bottom slot.

The motion detector alert device comprises a detector unit and an annunciator unit. The detector unit comprises a threaded base and a threaded socket. The threaded base of the detector unit screws into a motion sensing light fixture in place of the bulb. The bulb screws into the threaded socket. The detector unit monitors electrical energy passing from the motion sensing light fixture to the bulb and transmits a signal when the light fixture energizes the bulb. The annunciator unit may be located inside of a building. Responsive to reception of the signal sent from the detector unit, the annunciator unit may produce an audible sound to alert occupants of the building that motion has been sensed outside.

The motion detector alert device comprises a detector unit and an annunciator unit. The detector unit comprises a threaded base and a threaded socket. The threaded base of the detector unit screws into a motion sensing light fixture in place of the bulb. The bulb screws into the threaded socket. The detector unit monitors electrical energy passing from the motion sensing light fixture to the bulb and transmits a signal when the light fixture energizes the bulb. The annunciator unit may be located inside of a building. Responsive to reception of the signal sent from the detector unit, the annunciator unit may produce an audible sound to alert occupants of the building that motion has been sensed outside.

A portable lighthouse assembly for deterring intruders includes a lighthouse having a height less than 4.0 feet. A light emitter is rotatably positioned in the lighthouse to emit light outwardly therefrom. The light house is positionable in a yard to deter intruders when the light emitter is turned on. A motion sensor is coupled to the lighthouse to sense motion within a pre-determined perimeter of the lighthouse. The light emitter is turned on when the motion sensor senses motion. An alarm is coupled to the lighthouse to emit an audible alarm when the motion sensor senses motion. A camera is coupled to the lighthouse to capture images or video of an environment of the lighthouse. A microphone is coupled to the lighthouse to record audible sounds proximate the lighthouse.

According to one or more embodiments, a mobile testing device for testing at least one premises device in a premises security system is provided. The mobile testing device includes processing circuitry configured to imitate a plurality of characteristics of a predefined animal and cause the mobile testing device to traverse at least a portion of a premises monitored by the premises security system while imitating the plurality of characteristics of the predefined animal.

A package deposit enclosure designed for public use is powered by an efficient storage battery and photovoltaic cell array. These unique features allow the package deposit enclosure to be placed in locations where no power is available, but where there is frequent human traffic. Sensing and wireless data communication features allow the unit to be emptied less often than typical package delivery enclosures. Wireless communication also allows users' access to real-time information. On board power enables other functions, such as lighting and audio, to enhance device functionality.