What's in the box:

1MHz-3800MHz Radio Frequency Digital Programmable Attenuator 0-31dB Adjustable Step 1dB PC Controllable CNC Shell (Standard)

Made of fine quality material, practical, easy to operate and use, has a long service life.

Features:
Operating frequency range: 1-3800MHz
Input signal maximum power: 20dBm
Attenuation range: 0-31dB
Step size: adjustable 1dB step / retreat
Insertion loss: less than 2.0dB
Attenuation control: press OK button, after the attenuation digit flashes, press +, - key to actually add or subtract control, press OK again to confirm.
Input and output impedance: 50O
Input and output interface: inner hole of the screw in the SMA interface.

Specifications:
Material: PCB
Color: green+silver
Output type: DC
Power supply: Mini USB 5V
Operating frequency range: 1-3800MHz
Input signal maximum power: 20dBm
Attenuation range: 0-31dB
Step size: adjustable 1dB step / retreat
Insertion loss: less than 2.0dB
Input and output impedance: 50O
Return loss(RF1, RF2, all atten. states): 20dB
Package size: 100 * 90 * 30mm / 3.9 * 3.5 * 1.2in
Package weight: 60g / 2.1ounce

Packing List:
1 * Digital Programmable Attenuator