CUSTOMIZED SETTINGS: This power meter supports one key conversion of multiple display interfaces. You can not only customize the standing wave alarm, but also customize the shutdown delay time setting. MULTIPLE FUNCTIONS: The power standing wave meter supports delayed shutdown function, automatic function, battery undervoltage function, LED dual indication function. COMPACT AND PORTABLE: SWR meter is compact and lightweight, easy to carry and store, suitable for indoor and outdoor use. MF AM CW SSB modes can be selected to meet your usage needs. DIGITAL DISPLAY: Standing wave meter has a digital display that can directly show forward power, reflected power, antenna power, antenna efficiency, standing wave, battery voltage and accuracy. EASY TO OPERATE: This standing wave ratio meter has a power range of 0.5 to 150w and its control layout is convenient and easy to operate. It can be used after installation.