Advantages Portable Design 2. Easy Operation 3. Clear Display 4. Data Reliable Frequency Test Range 300Mhz—320Mhz 434Mhz 868Mhz Way to Test Frequency 1. Power on the device 2. Put the remote control close to the device 3. Press any button on the remote control 4. The lit indicator shows the frequency Way to Test Infrared Working or not The infrared works well if the indicator lits up after pressing the key button, otherwise, it is in malfunction
