Product performance indicators: Frequency range: DC - 4.0GHz Maximum power: 23dBm (200mW) Standing wave ratio: ≤ 1.20 System impedance: 50Ω RF interface: SMA double female head (Outer screw inner hole) Attenuation: Direct: 0dB (reference) Level 1: 10 ± 0.8 dB Level 2: 20 ± 1.1 dB Level 3: 30 ± 1.5dB Package Included: 1 * DC-4.0GHz RF Fixed Attenuator Module