It's a log of a television in the shape of a square. Underneath the square is a small line which represents the television stand. In the middle of the television is the letter X which represents that the television is off.
This is a TV Off icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.