In the construction industry, due to the entry and exit of vehicles, the use of mixers, and the addition of cement, dust has become an inevitable pain point in the construction industry. In building communication solutions, we must solve this problem to ensure the sustainability of communication solutions. The walkie talkie selected in the retevis building communication solution adopts a removable and washable dust-proof structure, so that users can clean the dust in the walkie talkie speaker regularly, to ensure the sound quality.