There is a set of machine in the main machine, which is about 1kg and the power is between 10W and 100W. When the machine is powered on, you can see that the machine is vibrating. This is the vibration generated when the machine is running. During operation, the motor in the host will produce violent vibration. The vibration frequency can also be adjusted freely.
The "machine" that does not need to be installed by punching is supported by a telescopic rod to push the main machine on the roof.
When the upstairs or downstairs neighbors produce noise, and we cannot solve the problem directly, this is a machine to solve the problem, it is a machine that can produce continuous vibration on the wall, it can play the role of retaliation to the upstairs neighbors and downstairs neighbors
Are you bothered by the noise of your neighbors? This is an artifact that solves the noise of neighbors very well. Maybe you need it now, so hurry up and buy it.