1、Lightweight and convenient, designed for car radio users or amateur radio enthusiasts with insufficient indoor space. 2、The transmitting power/standing wave ratio can be read directly from the meter without complex calibration procedures. 3、It can measure up to 200W power to standing wave ratio. 4、The low insertion loss (0.3 decibels or less) structure allows it to connect to the motherboard for long periods of time and is extremely convenient to use. 5、This standing wave meter and power meter is a highly accurate rf power meter measurement meter. Features: 1. Lightweight and convenient, designed for car radio users or amateur radio enthusiasts with insufficient indoor space. 2. The transmitting power/standing wave ratio can be read directly from the meter without complex calibration procedures. 3. It can measure up to 200W power to standing wave ratio. 4. The low insertion loss (0.3 decibels or less) structure allows it to connect to the motherboard for long periods of time and is extremely convenient to use. 5. This standing wave meter and power meter is a highly accurate rf power meter measurement meter. Specifications: Type: Power Meter Material: ABS Color: Black Frequency range: VHF 140 - 150MHz / UHF 430 - 450MHz Measurable power range: 0 - 200W Power class range: 15W, 60W, 200W Measurement accuracy of 5W input: AVG +/- 10%; PEP +/- 15% Measurement accuracy of 20 - 200W input: AVG +/- 5%; PEP +/- 10% Impedance: 50 ohms Connector: SO-239 M head Size: approx. 70 * 78 * 30 mm / 2.8 * 3.0 * 1.2 in Weight: approx. 200 g Package Include: 1 x Standing Wave Meter Power Meter Notes: 1. The meter head itself is sensitive, please do not apply excessive collision or vibration. 2. The maximum detectable power is 200W, but please note that when you use 15/60W gear, please pay special attention not to exceed 15/60W power, otherwise the product will be damaged. Always pay attention to whether the power size corresponds. 3. Please connect the left and right joints according to the instructions. Do not reverse connect. 4. This product has been calibrated before it leaves the factory. Please do not correct it by yourself. 5. Use or store it away from extreme weather or strong magnetic field.