Description: 5 interface display modes with dynamic simulation display bar. Switch easily between normal mode and peak hold mode. Enhanced accuracy using the fitting algorithm of detector diode characteristics, offering precision better than ± 5%. High-speed average detection mode for real-time efficiency display. Audible alarms: intermittent beep for standing wave greater than 2.0 and continuous beep for greater than 3.0. Compatible with G8GYW open source software code for customizable experiences. Powerful built-in lithium battery lasts over 50 hours per charge. Parameters: Frequency Range: 1.6-50MHz Power Measurement Range: 0.5W-150W Standing Wave Measurement Range: 1.0-99.9 Insertion Loss: < 0.12dB Insertion Standing Wave: 1.6-30MHz ≤ 1.02; 30-50MHz ≤ 1.05 Measurement Accuracy: Better than ± 5% Impedance: 50 Ω Standing Wave Alarm: ≥ 2.0 intermittent alarm, ≥ 3.0 continuous alarm (with shutdown function) RF Interface Type: SL16-M Display Contents: Forward Power, Standing Wave, Antenna Power, Efficiency Power Supply: Built-in 3.7V/900mAh rechargeable lithium battery or USB Type-C Shutdown Power Consumption: < 0.1uA Screen Size & Type: 0.96 inches, OLED Data Communication: USB Type-C Overall Size: 88mm x 38mm x 64mm (excluding protruding parts) Net Weight of Complete Machine: 190g Special Reminder: All parameters are measured with professional instruments and are accurate. The device supports 150W continuous detection; exceeding 500W may damage detection components. Brief Introduction: Long press to power on/off, short press to switch the display interface, and double-click for standing wave alarm. Triple-click to switch between normal mode and peak hold mode. Features auto-save function for 5 display interfaces. Charging indicator: red light shows and turns off when fully charged. Package Included: 1 x Power Meter Note: Please allow slight measurement deviation due to manual measurement. The actual color of the item might slightly differ from the pictures due to different monitors and lighting effects.