Features: brand new and high quality The RF detector is made of AD8318 chip , the design of the power supply voltage regulator circuit such that the detection accuracy tend to official data. The operating frequency range is 1-8000MHz, can detect -65 to 5dBm RF signal and with for DC voltage output the detected signal strength (in dBm, logarithmic detection), so the RF signal is converted into a for DC voltage output. RF signal corresponding to the amplitude or power of the output voltage. You can do signal strength indicator RSSI, spectrum analyzer, gain control. But also a higher precision IF signal measurement chip the best choice. Specifications: The operating frequency: 1-8000MHz Dynamic Range: -65dBm to + 5dBm The detection slope: -25mV / dB (TPY) The detection output voltage range: 0.5--2.1V Power supply voltage: 7-15VDC (containing the power regulator circuit) The input impedance: 50 ohms RF interface: standard SMA female Colour: green Material: PCB Size: approx. 25x15mm/0.98x0.59in Package Includes: 1 x RF Logarithmic Detector note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We are sure that the style is the same as the pictures show. Please allow slight dimension difference due to different manual measurements.