peachome_'s post

👧🏻 There were many products attached to the ceiling of my house! I got curious as I lived there, so I looked them up one by one 🙂‍↔️ ➀ Wi-Fi router A device that expands wireless Wi-Fi in a wide space ➁ Speaker A speaker for announcements ➂ Ventilation vent Air discharge and intake device ➃ Sprinkler An automatic fire extinguishing device that sprays water ➄ Gas detector A device that detects gas leaks and sounds an alarm ➅ Constant temperature detector A device that detects fire when a certain temperature is reached ➆ Body detector A device that detects the movement of people or objects and activates an alarm or a specific device