The BZ-02000400-051040-152020 from B&Z Technology is a RF Amplifier with Frequency 2 to 4 GHz, Gain 40 to 42 dB, Gain Flatness ±1.5 dB, Noise Figure 0.4 to 0.5 dB, Output Power 10 to 12 dBm. More details for BZ-02000400-051040-152020 can be seen below.