Product review (1 stars): Auto-On/Auto-Off feature is odd.
The product came with a lot of scratches. It is very heavy for one person to install. Occasionally the fun was turned on in the middle of night even though the auto feature is at OFF mode. Very strange.
Update review: Even after removing the gas sensor and cutting the wire off, the fan still turns on by itself once several weeks. Mostly at night. Anybody have solution for this?