... 2.rf wireless receiver module 3.Frequency:315/433.92MHZ 4.Voltage ... stability, SMT components, SAW (sound wave resonator)Optional for encoding ICOptional for the outside colorTech Spec : 1, Operating Frequency : ... systems, Remote controlling devices, Motor-driven curtain, roller blind door, garage / gate barriers, motorcycle, long-range wireless remote control products, industrial control products. ...