Methods and systems for remotely monitoring trailer or trailers attached to a vehicle is provided. The device fixedly or detachably attachable to a sump pump basin rim, reducing or eliminating sump-pump cavity overflow flooding, while retarding the escape of pump noise, odor, and gases known to emanate from sump-pump basins. The DCDC converter has an input terminal connected to the battery and the electric double layer capacitor. Low profile, side-emitting LEDs optically coupled to solid light guides enable the flash module to be thinner than 2 mm. The range display allows a user to readily recognize that the wide-angle image has been switched to the narrow-angle image by recognizing to what area in a pre-switching wide angle of view image the post-switching narrow-angle image corresponds. The COMA lens aberration effect that used to occur along with the 3-foil lens aberration effect is now eliminated by this test key layout.