Feature:1. ATTENUATION RANGE AND STEP SIZE: The RF programmable attenuator has a attenuation range of 0 to 31dB and a step size of 1dB2. FREQUENCY AND SIGNAL: The maximum working frequency range of RF attenuator is 1MHZ3800MHz, and the maximum power of input signal is 20dBm3. WIDE APPLICABLE: Variable RF attenuator use universal RP SMA interface, suitable for a variety of instruments4. IMPEDANCE AND POWER SUPPLY: The input and output impedance of digital RF attenuator module is 50, and the power supply adopt miniUSB 5V5. RELIABLE PCB: Digital RF attenuator module adopt excellent PCB material, with high reliability and miniaturization, good maintenance and interchangeabilitySpecification:Item Type: RF Programmable AttenuatorOperating Frequency Range: 1 ~ 3800MHzInput Signal Maximum Power: 20dBmAttenuation Range and Step: Attenuation range from 0~31dB, step size is 1dBInsertion Loss: Less than 2.0dBAttenuation Control: Press OK key, press + after the attenuation digit blinks, - key to control actual addition or subtraction, press OK again to confirmInput Output Impedance: 50Power Supply: MiniUSB 5VInput Output Interface: RP SMA interface.Package List:1 x RF Programmable Attenuator1 x USB Cable