Please find hereunder the detailed description of the function the customer need 1. The customer is an LCD monitor?s seller and there are spot lights above each display. 2. There is a light reflection on these monitor. 3. The customer needs to switch OFF the light when the salesman and the client stands in front of the display, in order to avoid the light reflection on the screen. 4. When they leave from the place, the light must be switched ON again. I tried by changing the expiry function of the sensor to recall 1 and give recall1 as 100% and recal2 as 0%. It does not work. how can i Achive this function with 5753L and L5512RVF without using logic engine? with thanks Hashim