YPM0450B is a wireless signal amplifier module dedicated to 300-450MHz signal. This module has the advantages. Of high average output power, good in band flatness, small upper and lower sideband offset and so on. 1: Standard express has a certain risk of getting lost.
3: Because some countries have strict regulations on the import of such products, such as Brazil, Russia, Germany, etc. Please make sure whether individual could import the product in your country, or if you have the qualification to import the product.