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
Voltage Protector for Refrigerator AC 220V Stabilizer Automatic Surge Protector Voltage Relay Socket
Aliexpress UK
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
LCTC Voltage Regulator Relay 220V 380V Voltage Stabilizer Module Power Barrier Controller Enhanced
Aliexpress UK
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
DIN Rail Dual Display Adjustable Voltage Current Protector Relay for over under Voltage Protection
Aliexpress UK
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
ANENG RT01 Car Battery Voltage Detector 11-25V Voltage Aermotor Repair 4/5 Foot Socket Relay
Aliexpress UK
The relay is connected between the vehicles main battery (Positive) and the leisure battery (Positive). It simply connects between the two batteries. The most important part of the circuit are the fuses!
eBay
12V 140A Charging Relay, Dual Battery Smart Isolator Voltage Sensitive Relay VSR Waterproof with
Aliexpress UK
It simply connects between the two batteries. The relay is connected between the vehicles main battery (Positive) and the leisure battery (Positive). The most important part of the circuit are the fuses!
eBay
FORWARD relays top grade quality 4 pin 30A auto relay with fuse, coil voltage 12VDC relais
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.
eBay
16A AC230V DC110V 24V Dual Voltage Impulse Relay Household Electric Pulse Control Relay Auto Control
Aliexpress UK
Dual Battery Isolators also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged. - 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.
eBay
SSR 500A 1000A DC-DC Solid State Relay Voltage DC Relay DC Battery DC Motor 500DD 1000DD
Aliexpress UK