... can use O1 and other circuit to control home electrical apparatus, such as lamp, cooker, and air ... can use O2 and other circuit to control home electrical apparatus, such as lamp, cooker, and air ... can use O3 and other circuit to control home electrical apparatus, such as lamp, cooker, and air ... base. 1). When you wand to add Wireless Infra Red Detector ,door sensor, or remote controller in the ...