Feature:1. Simple structure, convenient use, stable and dependable performance, high sensitivity, and fast measurement speed.2. Can be used for radio frequency power measurement and instrument calibration.3. PCB adopts 1.6mm thick doublesided board, 1.5 oz copper thickness, and full tinning process to ensure good passing performance of large and small currents.4. Simple to operate, stable work, small size and low power consumption.5. Premium PCB, sturdy and long lasting use, convenient and practical.Specification:Item Type: RF Power MeterMaterial: PCBMeasuring Power Range: -50+0 dBm (External RF attenuator can be extended to 100dBm)Measurement Power Resolution: 0.1 dBmMeasuring Frequency Range: 110000MHzMeasuring Power: 1nW1mWWorking Voltage: 712 VDCWorking Current: <50 mAhWorking Temperature: -4065Storage Temperature: -4065Interface Display and Operating Instructions:(1) Unit Description: dBm;(2) Key Description:FUN: Function key; MODE: change interface; SEL: self-add key or self-decrease key;4.1, display measurement dataInterface Display Font:First Line "RF-POW -51.2 dBm"Second Line "610uV 7nW"Note: Display signal dBm value, input voltage value, and input power respectively.4.2. Set RF power attenuation valueInterface display font:First Line "RF Attenuator"Second Line "SUB 000dB"Key Operating:FUN: Function key; (select direction of addition and subtraction) Display SUB for subtraction, display ADD for addition. (Long press FUN key to save set dB value)SEL: Self-increasing key or self-decreasing key;Note: Connect different RF power attenuators and set corresponding attenuation coefficient to read out the correct power parameters.5. WiringP1 wiring definition:No. Sign Meaning 1 VDD Module's positive power supply (7V~12V) 2 GND Negative pole of power supply of moduleP2 wiring definition:No. Sign Meaning 1 FX Not used 2 RFRadio frequency signal input 3 GND Power negative.Package List:1 x RF Power Module1 x Display