7703Manual Control: NoCoil Voltage: 24V DC500 Ampere continuous rating for use as a remote battery switch for inboard gasoline or diesel engines, reducing long cable runs Magnetic latch only draws current when changing state of switch, drawing no current in "ON" or "OFF" state Silver alloy contacts provides high reliability for switching live loads Optional manual switch provides an added level of safety allowing control with or without power, and offering lockout capability for servicing 3/8" copper studs, using Blue Sea Systems superior one piece technology, suitable for 300 Amperes continuous rating and large cable connections WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.