What is that in the picture? Under the hotel TV.

Not a smoke alarm, of course. The fireworks alarm will not be installed near the TV, but should be installed on the ceiling. This is the infrared remote control signal receiving extension line of the TV set-top box.

Someone had a similar question to you before and sent it to Weibo to ask about "Jiangning Public Security Online". Later, on1October 27th, it was transferred to "Jiangning Public Security Online" 2065438+65438 2008+065438: the extension line for receiving infrared remote control signals of TV set-top boxes. If you go out to stay in a hotel and see such a thing, if you are not sure or really worried, you can bring some post-it notes. Stick them on, just in case, to ensure that the reception of TV remote control signals is not affected. Remember to tear it off when you leave.

Even if there is no post-it note, it is the same to cover it with a hotel towel before going to bed.