SAVING ELECTRICITY: Its power is supplied by Four AA alkaline battery (NOT INCLUDED) which is not needed to replace in two years if its usage frequency is 3000 times a day INDUCTION DETECTION: it is set for 70cm out of factory set, Adjustable 15-80 cm IT FLUSHES AT REGULAR INTERVALS FOR PROTECTION EQUIPMENT: When the urinal rests over a long period, the flushing valve will open after an interval of 24 hours, preventing the water in the pipe from dry and preventing stink from fleeing back. CLEANNESS AND HYGIENE: Flusher Works automatically because of automatic sensing appliance, without touching any metal parts, flushing completely without peculiar smell and eliminating effectively mutual infection of bacteria.