... :Zinc Alloy+Plastic 3.copy face to face 4 buttons wireless remote control copy code with key Learining face to face ... (SAW) is used for stabilizing frequency, It is applied for wireless alarms, wireless controlling devices,etc.Using High stability, SMT components, SAW ... face, press the same button of the both remotes at the same time for 3 seconds, the LED will flash quickly, that means the code of ...