The housing is made of an aluminum alloy and is compact, lightweight, and portable. The digital display directly shows forward power, reflected power, antenna power, antenna efficiency, standing waves, and battery voltage. Frequency range: 1.8-50 MHz; Power measurement range: 0.5-120 W; SWR measurement range: 1.0-99.99. Equipped with a buzzer alarm function and a button to disable the alarm. Benefits and use cases: - Reliable measurements in a compact form: durable aluminum alloy housing, lightweight and portable for on-the-go use. - Clear, immediate data: read forward power, reflected power, antenna power, antenna efficiency, SWR, and battery status at a glance. - Versatile operating range: suitable for 1.8-50 MHz bands, with 0.5-120 W power measurement and SWR 1.0-99.99. - Practical alerting: buzzer alarm helps you notice critical conditions; easy to disable when silent operation is needed. Applications: - Antenna tuning and impedance matching: compare forward and reflected power to optimize match and reduce SWR. - Antenna installation and maintenance: verify antenna power transfer and efficiency during setup and servicing. - Field operations and portable setups: monitor power, SWR, and battery voltage during 1.8-50 MHz operation to ensure safe, reliable performance.