Features STABLE WORK: All functions of this module has excellent temperature and power stability, ensures controllable and stable operation. EXCELLENT PERFORMANCE: Complete, fully calibrated measurement, control system, accurate RMS to DC conversion (50 Hz to 3.8 GHz). EASY INSTALLATION: Comes with a small and compact size and a lightweight that the installation can be quickly completed and put into use soon. ACCURATE WORK: Provide an accurate linear output voltage in decibels (dB), 50mV/dB, which is sure to meet your needs. IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the working efficiency! Specification: Item Type: RMS DC Module Material: PCB RMS Detection: 65dB Input Impedance: 50 Ohms Output Impedance: 50 Ohms (video impedance) Operating Frequency Freq: 50hz to 3.8GHz (official DEMO line, which can be changed by changing the input matching line to change the operating frequency range) Output Voltage Range: 0.5-3.5V (corresponding to - 52 to +8 dBm) Input Output Ratio: About 50mV/dBm Input Dynamic Range: - 60 to +10dBm High Linear Dynamic Range: - 52 to +8dBm Power Supply Voltage: 3.3-5V.DC at 20mA Package List: 1 x Module  Package List 1 x Module