... for wireless alarms, wireless controlling devices, etc.Using High stability, SMT components, SAW (sound wave resonator) ... Optional for encoding ICOptional for the outside colorTech Spec : 1, Operating Frequency : 315MHz/433.92MHz2, Operating Voltage : ... Modulation Mode : ASK5, Operating current :160-200mA6, Transmitting power : 1.5W7, Transmitting distance:3000m(open space , receiving sensibility : - ...