1Customized Settings: This power meter supports multi display interface one button conversion function. You can not only customize the standing wave alarm setting, but also customize the shutdown delay time setting.2Multiple Functions: Power Standing Wave Meter supports time delay shutdown function, automatic function, battery undervoltage protection function, LED double indication function.3Easy To Carry: SWR meter is small and light, which makes it easy to carry and store, suitable for indoor and outdoor use.4Digital Display: The standing wave meter has a digital display that directly shows forward power, reflected power, antenna power, antenna efficiency, standing wave, battery voltage and accuracy.5Simple Operation: This standing wave meter power range of 0.5 to 120w, and the standing wave meter control layout is convenient and easy to operate.