Abstract: Various example embodiments described herein relate to a sensor assembly. The sensor assembly includes a first sensor cover and a second sensor cover. The first sensor cover is disposed on a first end of the sensor assembly and the second sensor cover is disposed on a second end of the sensor assembly. The first sensor cover defines a first capillary and the second sensor cover defines a second capillary therethrough. The sensor assembly further includes a first sensing unit, a second sensing unit, and a filter. The first sensing unit and the second sensing unit are disposed between the first sensor cover and the second sensor cover. In some example embodiments, the filter is reactive to a target gas and thereby prevents an inflow of the target gas through the second capillary into the sensor assembly.

Abstract: The present utility model discloses a demonstration switch structure of a lamp, comprising: a demonstration test switch which is fixedly installed on a battery case of the lamp, and a mechanical press control device which is fixedly installed on the battery case of the lamp and capable of movably pressing a control terminal of the demonstration test switch, wherein a control component of the mechanical press control device extends to a switch window of a packing box of the lamp. The present utility model has the following advantageous effects: the packing cost is reduced greatly, the hidden danger of electric leakage due to contact of a pluggable wire in the conventional demonstration switch structure with water is eliminated, and the hidden danger of short circuit of a lamp set is eliminated.

Abstract: The present utility model discloses a demonstration switch structure of a lamp, comprising: a demonstration test switch which is fixedly installed on a battery case of the lamp, and a mechanical press control device which is fixedly installed on the battery case of the lamp and capable of movably pressing a control terminal of the demonstration test switch, wherein a control component of the mechanical press control device extends to a switch window of a packing box of the lamp. The present utility model has the following advantageous effects: the packing cost is reduced greatly, the hidden danger of electric leakage due to contact of a pluggable wire in the conventional demonstration switch structure with water is eliminated, and the hidden danger of short circuit of a lamp set is eliminated.