Xhorse Remote Tester Radio Drequency(RF) Infrared(IR) Frequency Test Range: 1.300Mhz-320hz2.434Mhz Way to Test Frequency: Put the remote control close to the device Press any button on the remote controlThe indicator that turns on is the frquency Way to Test Infrared Working or Not: Press the key.The infrared indicator turns on – good, off – bad….