Global Electric 42-inch DC 12V Non-Brush Ceiling Fan for RV, Brushed Nickel with Wall Control, Oak/Light Oak Reversible Blades Three phase Brushless motor has a permanent magnetic rotor and static magnetic rotor to let the motor run without any noise and meet low voltage requirements. Very Energy Efficient, Electricity Usage is 1Amp (=12W), Motor will never produce heat to damage Switch, Uses 1/3 less electricity than Brush DC12V motor Pre-drive IC offers up 6 Speeds' RPM When fans are working they never interfere with TV signals The Product is under CSA CUS Certificate # 244962 issued to Global Electric Products, Inc