Frequency Test Range:
1.300Mhz-320hz
2.434Mhz
Way to Test Frequency:
Put the remote control close to the device
Press any button on the remote control
The 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.
This device need extra battery, but the battery is not packed, please get one by yourself.

Package including:
1pc x Xhorse Remote Tester Radio Drequency (FR) Infrared(IR)