Digital Voltage Sensing Relay DVSR 12V 24V Battery Isolator

The Digital Voltage Sensing Relay (DVSR) 12/24V is an intelligent battery management device designed to automatically control charging between multiple battery banks in marine, RV, automotive, and off-grid electrical systems throughout New Zealand. Engineered for both 12V and 24V systems, this automatic voltage sensing relay helps protect starting batteries while ensuring auxiliary batteries receive efficient charging from alternators, battery chargers, solar systems, and onboard charging sources.

Using advanced digital voltage sensing technology, the DVSR automatically connects battery banks during charging and isolates them when voltage drops, preventing unwanted battery drain while maintaining optimal charging performance. This allows users to safely run house loads, marine electronics, fridges, lighting, winches, and accessories from auxiliary batteries without risking depletion of the engine starting battery. Voltage sensing relays are widely used in marine dual battery systems because they simplify charging management and improve battery protection.

Suitable for boats, yachts, caravans, campervans, 4WDs, fishing boats, and off-grid power systems, the DVSR features fully automatic operation requiring minimal user input. The compact marine-grade design offers reliable long-term durability in harsh marine and coastal environments while reducing wiring complexity compared to manual battery switching systems.

Digital voltage sensing relays help improve charging efficiency by automatically prioritising charging when alternator voltage rises above preset thresholds.

Key Features

• Automatic digital voltage sensing relay
• Suitable for both 12V and 24V systems
• Automatically combines and isolates batteries
• Protects engine starting battery
• Ideal for dual battery systems
• Supports marine and RV applications
• Simplifies battery charging management
• Suitable for alternator and charger systems
• Compact marine-grade construction
• Reliable automatic operation
• Reduces manual switching requirements
• Suitable for off-grid electrical systems

Voltage sensing relays are commonly used to “automatically charge multiple battery banks from a single charging source.”

Why Buy a DVSR from Barton Marine NZ?

At Barton Marine NZ we supply trusted marine electrical components and battery management systems designed for demanding New Zealand boating conditions. This Digital Voltage Sensing Relay is ideal for improving battery protection, charging efficiency, and electrical system reliability onboard boats, caravans, and off-grid vehicles.

Perfect for:

• Marine dual battery systems
• Yachts and launches
• Fishing boats
• Caravan electrical systems
• Campervans and RVs
• 4WD auxiliary battery systems
• Solar charging setups
• Off-grid battery banks
• Marine electronics systems
• Battery charging upgrades

Technical Specifications

Digital voltage sensing relays are designed to automatically combine batteries when charging voltage rises and isolate them when charging stops.

Common Applications

This Digital Voltage Sensing Relay is commonly used for:

• Marine battery isolator systems
• Boat dual battery installations
• Caravan battery charging
• 4WD auxiliary batteries
• Campervan electrical systems
• Offshore cruising yachts
• Solar charging systems
• Marine electronics power systems
• Fishing boat battery management
• Off-grid electrical systems

DVSR systems are popular because they provide automatic battery isolation without requiring manual switching.

Performance Benefits

This DVSR provides:

• Automatic battery protection
• Improved charging efficiency
• Reduced battery drain risk
• Simplified electrical management
• Reliable marine durability
• Improved auxiliary battery charging
• Dependable off-grid performance

Automatic voltage sensing relays help improve battery longevity by preventing accidental discharge of starting batteries.