Wow, first time for me to see such kind of amplifier. Nice hunt @linuslee0216. Now for my personal review below :

Pros :

• It can be easily be mounted in a position and it has a better WiFi function which it has flawless signal and better range reception towards different directions making sure that connecting devices will have no problem.
• Same as other WiFi router, it can be setup really easy where you just need set desired network settings and WiFi configurations and instantly devices can connect.
• It does consume less in electricity which makes it efficient in terms of energy usage.

Cons :

• There is no monitoring on the amplifier which makes it hard to check if it has problem or not. You will just need to physically adjust them.