Xiaomi Mi 4K Laser Projector 150” User Manual page 20

Audio Effects
Speaker Audio
Speaker
Power Supply Built-in Power Supply
Smart Temperature Control
Safety & Protection Temperature Switch
Laser Projector Eye Protection
Noise Level
Remote Control
Indicator
Others
Storage Temperature
Operating Temperature
Operating Humidity
Dolby Audio/DTS-HD
Full Range × 2/Tweeters × 2
Built-in AC-DC, DC-DC
Automatic Brightness Adjustment/Smart Fan Speed Adjustment
Overheating Auto Turn-off
Human Body Detection Sensor (can be disabled)
≤32 dB (View mode at an ambient temperature of 25°C)
Bluetooth Remote Control
White light
-20°C to 55°C
0°C to 40°C
20%–80%