The module must first be connected to the input (RFin) and output (RFout) terminals, and then powered (DC) (connect the DC power supply). When the module is powered by DC, be sure to connect the DC positive and negative poles correctly. Do not reverse the connection! Otherwise, the module be ! Amplifier operating frequency: 1500MHz~1650MHz Input and output impedance: 50Ω Gain: 30dB Input power 10dBm: 24V power supply output power 39dBm (8W) Output power 13dBm: 28V power supply output power 40dBm (10W) Working current: 1A (typical value) Connector type: SMA female (external thread inner hole) Colour: Silver+Black Material: Aluminum Alloy Note: Different batches may have different appearance label printing, which not affect the use Package Contents: 1x Power Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.