Features: 100% brand new and high quality Widely used. Simple to use. Operating frequency 43320MHz. The maximum input signal strength is 13dbm (20mw). The input impedance is 50 ohms, and the output impedance is 50 ohms. Package Includes: 1PC x Filter Specifications: Name: bandpass filter Working frequency: 433 20mhz Insertion loss: 2.8db Out-of-band rejection: 40db @ 50mhz Input impedance: 50 ohm Output impedance: 50 ohm Maximum input signal strength: 13dbm (20mw) Input interface: SMA-K (sma female) Output interface: SMA-K (sma female) note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you