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Explorer is a flashlight that can examine poisonous gas. It is designed for cave exploration and miner.
Explorer can tell you whether there is poisonous gas around you by changing the color of light. The white color represent safety, yellow means be careful (there is poisonous gas around you but the concentration is not too high to be danger.). While the red light means dangerous, you need withdraw from there.
There is an inlet hole in the head of the flashlight and an outlet hole in both side of the flashlight. Through the inside examiner the light can examine the poisonous gas concentration quickly. And tell the users through the color of l