Morningstars Sun Saver Duo is an advanced PWM two battery controller for RVs, caravans, boats and cottages- Rated for 25 amps at 12 volts DC, this product will charge two separate and isolated batteries at the same time, such as a house and an engine battery, based on user selectable priorities- This controller also includes a backlit remote meter which may be mounted in or on a wall, and displays digital and pictorial status information about the solar power system- The Sun Saver Duo employs Morningstars legendary Sun Saver controller technology, whose long-term track record for high reliability and improved battery charging is well recognized in the solar industry- The Sun Saver Duo is epoxy encapsulated for environmental protection, is user adjustable via DIP switch or connection to a personal computer, and has an optional remote temperature sensor-Features- Sun Saver-Duo 25 amp 12 volts with Meter Kit-- Two Battery Charging-- Provides More System Information-- Lower Cost-- Easy to Install-- Longer Battery Life-- Extensive Electronic Protections-- Highly Reliable-- Dimension - 17 x 5-6 x 4-1 in-- Item weight - 1lbs- SKU: SNTS326