Features:  With fine power insensitivity and temperature stability.  This device achieves the perfect combination of low cost, small size, low power consumption, high-precision and high stability.  Extremely wide dynamic-range and frequency-range from IF to UHF audio.  Suitable for many applications which need to reduce the signal to decibel equivalent value.  Input frequency is from 0.1MHz to 600MHz.  The default-ranges of input power: -75~+15dBm.  The powersupply voltage is 6-12V@<10mA.   Applications:  Signal level convert to dB form.  Power measurement of antenna of transmitter.  Receiver signal strength indicator (RSSI).  Low-cost r-adar and sonar signal processing.  Network and spectrum analyzer (up to 120 dB).  Make sure the signal level is as low as 20Hz.  Multimeter true dB AC mode.   Specifications:  Name: AD8307 Module  Material: printed circuit board  The default-range of input power: -75~+15dBm  Powersupply voltage: 6-12V@<10mA  Input frequency: 0.1-600MHz  Module voltage-gain: 14.3dB  Input output impedance: 50ohm  Max output power: P1:20dB  Working temperature: -40℃ to 85 ℃  Input interface: SMA  Item size: 57 * 24 * 7mm / 2.24 * 0.94 * 0.28in  Item weight: 5g / 0.18ounce  Package size: 80 * 51 * 10mm / 3.15 * 2.01 * 0.39in  Package weight: 6g / 0.21ounce   Packing List:  1 * AD8307 Module