Features: brand new and high quality Suitable for radio applications such as HF, FM, VHF UHF. Short waves remote control, wireless digital walkie, digital radio. Perfectly solves the problem of signal instability and signal fragility. In signal-unstable areas such as indoors and outdoors, RF amplifiers can increase the possibility of continuous communication. Smaller size,can installation of equipment in more confined space. Specifications: Material:PCB Power supply voltage: DC12-15V Working frequency: 2MHz-700MHz Typical power gains: 35dB Output power: 34.8dbm (3W) Input power: less than 10dBm Size: Approx.46x32x15mm/1.8x1.26x0.59inches Package Includes: 1x RF Amplifier Module note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.