Product Name: Split Charge Relay Kit. Relay activation voltage: 13.3V. Relay isolation Voltage : 12.8V. Red Cable Total Length:3MTR. This type of kit is suitable for Camper Vans, Motor homes, 4x4s, Day Vans, Mobile workshops, Cars or Boats. Voltage sense systems are especially suited for modern vehicles with canbus controlled wiring as this type of kit does not need an ignition feed or any additional wiring and are very simple kit to install, all you need to do is to connect your starter battery to your leisure battery(s) by using the kit supplied, with very easy to understand fitting instructions and a wiring diagram. The voltage sense relay simply detects the rise in voltage from you vehicles charging system to allow you to charge your leisure battery(s) while your engine is running. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle. The kit includes comes pre-assembled with terminals. 12v 140amp Intelligent Voltage sense Split Charge Relay. 2 x 250mm red 70amp cable from Battery to fuse holder leads(Lead terminals pre-crimped). 1 x 500mm red 70amp cable Relay to fuse holder lead(Lead terminals pre-crimped). 1 x 2 metre 70amp Relay to fuse holder lead(Lead terminals pre-crimped). 1 metre 70amp of Black earth cable(Lead terminals pre-crimped). 1 Pair 8mm Post Type Battery Terminals. 2 x MTA MIDI Fuse holders. 4 x 60A MTA MIDI Fuses including 2 spares. Red&Black Heat shrink to protect all the connections. 10 x Cable ties. 10 x adhesive cable tie fixings base to keep everything tidy. 15 x fixing screws. Easy to understand Fitting Instructions + after sales support if required. Please note: The 3 mtrs of Red cable supplied in this kit are made up of the 4 separate leads which is pre-assembled with terminals as described above. Please kindly note that. Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.