Morento HY4866 air purifiers for home large room is designed with double air intakes. our air purifiers for bedroom Cadr is up to 300+(m3/ h), which is better for large room and living room.The Morneto HY4866 air purifier for smokers is equipped with an infrared PM2.5 sensor, which will monitor the air quality in real time and feed it back to the display screen. Let you know the health of the air at any time. The air purifiers for bedroom has added a lock design to prevent pets from accidentally touching the button when adults are away.