*Dual Battery Isolator: The smart battery isolator cuts in at 13.3 volts and cuts out at 12.8 volts to ensure your primary battery is always charged and ready to start your vehicle. It can charge two batteries simultaneously and isolate them from each other when the vehicle is turned off. *Easy to Install: This split charge relay kit comes with complete accessories, allowing you to start installing directly without purchasing additional components. Besides, we have detailed instructions for you to complete the installation easily and flawlessly. *Rugged & Durable: Split charge relay is made of a premium plastic material, which is shockproof and dustproof, ensuring maximum strength and durability for long-lasting usage. You will always be prepared and confident to take on any challenge. *Superb IP65 Waterproof: Voltage sensitive relay is waterproof up to IP65, which means that your isolator is secure for use even in dusty, wet, and unexpected extreme weather environments. Great for extreme vibration applications as well. *Fit Various Vehicles: This isolator kit 12v has a compact size of 2.66" x 2.11" x 2.66", suitable for almost anywhere. Mainly used in off-road vehicles, camper vans, RVs, caravans, 4x4s, leisure vehicles, ships, yachts, marine applications, etc. ******************************************************************************************************* *Specifications Model: JDQTJ-4M Rating Voltage: 12V DC Continuous Current: 140A Intermittent Current: 160A Cut-in Voltage: 13.3V Cut-out Voltage: 12.8V IP Rating: IP65 Material: Nylon Plastic Current Draw-Charging: 280mA Current Draw-Standby: 8mA Power Studs: M6 Stainless Steel Delay Time: 5 Seconds Disengage Delay: About 5-10 Seconds Operation Temperature Range: -30 to 105 / -22 to 221 Item Dimensions(L