Stable and controllable time delay switch

The invention discloses a stable controllable time-delay switch, which comprises a wiring body and a panel installed on the wiring body, and is characterized in that the inner wall of the panel is rotatably connected with a pressing cover, the inner wall of the pressing cover is fixedly provided with a partition plate, and the upper end of the partition plate is provided with a plurality of quickfalling grooves and slow release holes in a penetrating manner; the bottom of the partition plate is rotationally connected with a plurality of baffles in one-to-one correspondence with the quick falling grooves through torsional springs, a conversion groove is formed in the upper wall of the panel, and a rotating block is rotationally connected to the inner wall of the conversion groove. The magnetic fluid lamp has the advantages that the quick-falling groove and the slow-release hole which are large in hole diameter difference are formed in the partition plate, the baffle is installed at theposition of the quick-falling groove, the magnetic fluid can only pass through the slow-release hole with the small hole diameter in the upward moving process, and therefore the vertical flowing speed of the magnetic fluid is obviously different, and the lighting process of lamplight is rapidly completed; and a certain time is needed in the closing process, the effect of delayed closing is achieved, electronic equipment is not involved, the manufacturing cost is lower, and the service life is longer.