1x VSR with fitting screws (optional). 【Delay Setting Function】 —— The new delay function avoids frequent switching on and off of the isolator due to unstable current, which prolongs the isolator and battery life.
eBay
TOMZN Din Rail 230V Adjustable Over Under Voltage Protective Device Protector Relay Monitor Current
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
LANBOO 6mm Ultra thin design type Relay with Led 6A DC12 24V Microrelay Intermediat Other voltages
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
1/2P 63A Tuya WiFi ZigBee Smart Circuit Breaker MCB Switch Energy Meter Timer Relay kWh Voltage
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
ETEK Protection Over Voltage Protector Relay 16A AC140-300V 16A Electronic Multifunctional
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
TOMZN Din Rail 230V Adjustable Over and Under Voltage Protective Device Protector Relay Monitor
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
RMshebei Smart Life PV Smart Circuit Breaker Tuya Voltage relay 220v wifi Current Leakage Protection
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
ESP32 Relay Development Board AC/DC Power Supply Voltage Monitor WiFi Bluetooth BLE 4 Channel
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
KWS-306WF Tuya WiFi Power Meter KWh Energy Tester Voltage Protection Relay Switch Color Screen
Aliexpress UK