... quality, cheap price 2.Aluminium housing ,sensor and valve built-inside ( exposed installation ) sensor urinal flusher C-5231 C-5232The above ... two models is the same price, 19 USD.Infrared Sensor Urinal Flusher 1.Small size,good quality, cheap price2.Aluminium ... housing ,sensor and valve built-inside features & functions 1.Water-saving,2 ...