The Fitting Algorithm Based On The Characteristics Of The Detection Diode And The Dual Reference Segment Detection Allow The Accuracy To Be 5% In The Entire Power Range Of 0.5w-150w. 5 Interface Display Modes, One-Click Selection According To Your Preference High-Speed Average Detection , Real-Time Efficiency Display. If The Standing Wave Is 2.0, The Alarm Will Sound. Compatible With G8gyw Open Source Software Code, Freely Modifying The Code Brings More Fun. Usb Firmware Upgrade Does Not Require A Dedicated Writer. Built-In Carp Battery, It Can Be Used For More Than 50 Hours On A Single Charge. Multi-Function Buttons Make Use More Fun, And Provide An Additional Way To Interact With Additional Functions In . 1. Frequency range: 1.6-50MHz 2. Power measurement range: 0.5W-150W 3. Standing wave measurement range: 1.0-99.9 4. Insertion loss: Less than 0.12dB 5. Inserting standing wave: 1.6-30MHz1.02; 30-50MHz1.05 6. Measurement accuracy: 5% 7. Impedance: 50 8. Standing wave alarm: 2.0 (with shutdown function) 9. RF interface type: SL16-M or N (default M) 10. Display content: forward power; standing wave; antenna end power; efficiency. 11. Power supply: built-in 3.7V/1000mAh rechargeable battery or USB type-c 12. Shutdown power consumption: Less than 0.1uA 13. Screen size: 0.96 inches 14. Screen type: OLED 15. Data communication: USB type-c 16. Firmware upgrade: supported 17. Overall machine size: approximately 88mm x 38mm x 64mm (excluding protruding parts) 18. TIPS: It is recommended that the continuous emission in FM or AM mode should not exceed 110W: SSB or CW can work under a power of less than 200W for a long time: exceeding 500W will damage the detection component. Material: ABS colour: black Package Contents: 1 x Frequency Band Power Meters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.