Manual/Automatic Modes, Effortless Switching: Wave goodbye to complex setups with our 12V 140A dual battery isolator kit! In manual mode, just a single of a button connect or disconnect your circuit. Switch to automatic mode and relish smart switching without having to intervene manually. Leave those circuitry troubles behind and upgrade to smoother operations with our voltage sensitive relay (VSR)! Real-Time Monitoring, Battery Status at Your Fingertips: Stay well-informed and in control with our intelligent battery isolator, which comes with an LED display that offers instant updates on the health of your high-voltage battery. Keep a close eye on your battery's condition all the time, guaranteeing reliable support throughout your travels. Enjoy a worry-free experience and more secure energy usage wherever your adventures take you. Comprehensive Protection, Double Security: Rely on the smart and secure operation of our voltage sensitive relay isolator, equipped with advanced high and low voltage protection. Whenever the voltage drops below 11V or rises above 17V, it automatically cut off the circuit, safeguarding your primary battery from deep discharge and your secondary battery from overcharging. Experience improved security and long-lasting performance with every single use. Installation Made Simple:Complete Kit, Hassle-Free Installation: Have a stress-free setup with our package that includes everything essential: red heat shrink tubing, lug cable ends, positive & negative battery connection cables, screws, and cable ties. There's no need for extra purchases, ensuring that you have all you need right at hand for a quick and straightforward installation. Universal Compatibility for Every Scenario: Our dual battery isolator is specifically designed for dual battery systems, ensuring that both batteries can be simultaneously without disrupting the power supply to your devices. Whether you're in your off-road vehicle, , or marine vessel, no matter where you are or when you need it, it offers stable and dependable for your equipment. Designed specifically for dual battery systems, our relay kit smoothly handles your circuit control issues! You can switch between manual and automatic modes for convenient operation. Thanks to the LED display, you can keep track of your battery status in real-time and safety with our high and low voltage protection features. Manual or Automatic Modes, Smooth Switching Real-Time Monitoring, Voltage within Reach Full Protection, Double Security Layer Complete Kit with Easy Installation Universal Compatibility in All Situations. Bid farewell to complicated setups! Our dual battery isolator comes equipped with both manual and automatic modes, allowing you full control over your circuit switches. Seize control of your power management smoothly and accurately! Advanced LED Display: Keep yourself informed about the health of your high-voltage battery in real-time through our LED display. This way, you'll always be in the know regarding your battery's condition. Whether you're out on an outdoor adventure or dealing with daily chores, our dual battery isolator enables you to have smarter control over your circuits than ever before. Color:As Shown Material:Plastic+Metal Package Contents: 1 * Dual Battery Isolator Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.