No need to drill holes
Just plug the air conditioner hole and use it
Strong suction and continuous operation can effectively absorb harmful gases indoors and discharge them outdoors
Stepless speed regulation and low noise operation
Equipped with 220V to 3-12V2A adjustable power supply, with indicator light, exhaust fan speed
Freely adjustable in low speed state, the noise is only about 38 decibels, which will not affect rest
