Ceiling Mount Supported. There are 4 holes in the bottom of the projector for ceiling mount. The size for the screw is M4*10. Warmly Tips: 1. This is mainly for home entertainment, not recommended for class teaching. 2. For wifi connection, please make sure the distance between the phone and projector is within 2 meters. 3.
https://www.amazon.com/Projector-WiMiUS-K3-1920×1080-Smartphones/dp/B08B4659GZ