This power amplifier can output 39.2dBm (8.31W) @ 433MHz maximum at 8V, current 1.56A, efficiency 66.5%, which is very suitable for two lithium-ion batteries and can burst such a large power. High power, high efficiency, small size, power at 8V, output 8.3W. Working frequency: 400-460MHz. Maximum output power (P1dB): 8.32W (39.2dBm) @ 8V 1.56A Efficiency 66.6% 6.76W (38.3dBm) @ 7V 1.43A Efficiency 67.5% 5.12W (37.1dBm) @ 6V 1.26A Efficiency 67.7% Input power: 20 - 23dBm (0.1 - 0.2W), less than 0.1W can work, the output power increase as the input power increases, and finally reach the maximum power point. Working voltage: 5-8.4V (lithium battery supply) Working current: 1.6A (Max) Input impedance: 50 ohm Output impedance: 50 ohm Input and output terminals: SMA-k female (male threaded bore) Application: Digital transmission extended range, remote control, interphone even power amplification. Note:Due to different production batches, there are differences in the printing of appearance labels, which not affect the use. Colour:Green Material:Plastic Package Contents: 1 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.