ITEM NAME:23dBm DC 4.0GHz RF Fixed Attenuator SMA Double Female Head 0dB 10dB 20dB 3 Ws Gw.Maximum power: 23dBm (200mW). Direct: 0dB (reference). RF interface: SMA double female head (Outer screw inner hole). Frequency range: DC - 4.0GHz. Level 2: 20 1.1 dB. Level 1: 10 0.8 dB.