Feature:1. Working Parameters: Digital power standing wave meter, operating frequency is 1.854Mhz, measurement range is 0.5200W, standing wave range is 199.9, default standing wave greater than 2.0 will alarm.2. Power and Standing Wave Ratio: This SWR meter supports forward and reverse, power and standing wave ratio parameter reading, supports power and standing wave fine tuning functions (20%).3. Alarm Function: Supports high standing wave alarm function (standing wave alarm point can be set), supports delayed shutdown function (shutdown time can be set), convenient and practical.4. Multiple Functions: The digital power standing wave ratio meter supports automatic startup function, battery undervoltage guard function, and analog progress bar function, safe and reliable.5. Built in Battery: This power SWR meter has built in 3.7V rechargeable lithium battery, 4000mAh large capacity to ensure long endurance, with low voltage alarm and automatic shutdown functions.Specification:Item Type: SWR Power MeterWorking Frequency: 1.8-54MhzMeasurement Range: 0.5-200W (Recommend not to exceed 120W in FM, CW, AM, FT8 modes)SWR Range: 1-99.9 (Default alarm when SWR is greater than 2.0, alarm point can be set through menu)Connector Type: UHF(SL16).Package List:1 x SWR Power Meter