The HY-40R201I with Wireless Modules Module RoHS is a RF amplifier manufactured by Shengrun. It is a small and compact module that is designed to provide high linearity output in a variety of wireless applications. It has a operating voltage of 3.3V to 4.2V and consumes less than 200mA of current. It offers a low noise figure of 2dB, gain of 35dB, a 3dB bandwidth of 400MHz-2.5GHz, and SMA female connectors for Input/Output. The module also features a low harmonic distortion of -25dBc, operating temperatures of -40°C to +85°C, an ultra-wide frequency coverage of 2.4GHz-6GHz, and a return loss of 9dB. It is RoHS compliant and features an all-around performance. It is an ideal set-up for various applications including 2.4GHzwireless audio and video transmission, 5GHz wireless local area networking, 4G/LTE mobile communications, and telemetry.