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.
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GTRIC M5 Series Small Mini Inductive Proximity Switch Sensing Distance 1mm NPN PNP NO/NC DC 10-30V 3-wire Miniature Metal Detect
Aliexpress UK
Suitable for most 12V charging systems- Surge protection. Dual Battery Isolators also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
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Rechargeable Motion Sensor LED Night Light Bar Human Infrared Sensing Lamp For Kitchen Cabinet Wardrobe Closet Stairs Bedroom
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Built-in LED indication (lights up when VSR starts). 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.
eBay
Free shipping 24G HLK-LD2450 Sensing Distance 8M Human Body Motion Tracking Trajectory Radar Sensor Module MM Wave Smart Home
Aliexpress UK
Tri_rated cable is also designed for use inside small electrical devices. As a result, tri-rated cable has applications in most industries. 2x midi fuse holders. Red and Black heat shrink to protect your cables and connectors.
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Artillery Sidewinder SW-X3 X4 Pro Plus Z-axis ABL Sensors Leveling Eddy Current Sensing Switch 3d Printer Accessories
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Brand new never been used
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Led Solar Light Outdoor Motion Sensor Human Body Sensing Adjustable Head Ip65 Waterproof Solar Three Head Wall Lamp Garden
Aliexpress UK
Suitable for most 12V charging systems- Surge protection. 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.
eBay
Automatic sensing infrared switch 3.7V-24V DC day/night mode with PIR motion detector and ambient light sensor
Aliexpress UK
Tri_rated cable is also designed for use inside small electrical devices. As a result, tri-rated cable has applications in most industries. 2x midi fuse holders. Red and Black heat shrink to protect your cables and connectors.
eBay
GEGVE Smart Infrared Sensing Inductive Pull-out Kitchen Sink Faucet Multifunctional Hot Cold Tap Tap Washbasin Faucets Mixer
Aliexpress UK
Simply connect the relay between your starter battery and leisure battery and the relay takes care of everything, making sure your starter battery is not drained for when you need to get going again.
eBay
HLK-LD2450 test kit 24Ghz MM Wave Human Motion Tracking Radar Sensor Module LD2450 Sensing Distance 8M Smart Home DC5V Hi-Link
Aliexpress UK