Traditional Culture Encyclopedia - Hotel reservation - There is a red one on the hotel wall.
There is a red one on the hotel wall.
Fire sprinkler. There is a red one on the hotel wall, which is a fire control facility. Bright red indicates normal working condition and is safe, so it is a fire sprinkler. Fire fighting device refers to the fixed facilities in buildings such as automatic fire alarm system, indoor fire hydrant and outdoor fire hydrant.
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