The Blue Sea 7610-BSS SI-ACR Automatic Charging Relay, 12/24V DC 120A automatically manages charging between battery banks while helping keep loads isolated.Automatically combines battery banks during the charging cycle and isolates under discharge; 1/4" x 0.031" male quick connect terminals for ground and remote LED and starting interrupt.Product Information Manufacturer Part Number 7610-BSS Key Features Automatically combines battery banks during the charging cycle and isolates under discharge 1/4" x 0.031" male quick connect terminals for ground and remote LED and starting interrupt 12/24 V auto ranging voltage input 7/8" (22.22mm) stud length to accept multiple cable terminals Activates from any charging source - alternators, battery chargers, or solar panels Allows temporary isolation of house loads from engine circuit during engine cranking to protect sensitive electronics Clip-on cover protects and insulates terminal connections Hermetically sealed contacts / vaporproof Specifications Amperage 120A Voltage 12/24V DC IncludedIncluded with the ADD A BATTERY Dual Circuit SystemImportant InformationWARNING: 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.