i have a plan to make : 1. when the harvest lux bigger then target senlll (light level sensor device), senll would turn the lamp off. 2. When lux becoming low , then senll will trigering 5753 PEIRL to detect any motion. 3. if 5753 peirl capturing object movement , then lamp will be turn on. 4. last, after 5 minute if not detect any object movement, the lamp will be turn Off. do you have any idea for sequence and device setting , in order to fulfill my plan as above. thank in advanced rgds vincent