CCTV 19:30 What does the announcer have in his hand?

In fact, it is a remote control, which can control the picture displayed on TV, that is, the picture behind him (in fact, when shooting, there is a monochrome background behind him, and then people are put on the map). For example, after the host finishes the temperature distribution in the whole country, click to switch to the national forest fire alarm forecast. In this way, the host can control the picture behind him at his own speed.