Use sophisticated microprocessor technology to provide complete battery status information for one and two battery banks, respectively. Simple and easy-to-use multicolor displays show volts, amps, amp hours consumed, and operating time remaining. The Link 10 and 20 allow you to select Automatic, Sleep and Scanning modes and automatically calculate and display charging efficiency. The Link 20 can monitor a house bank and starting bank or two house bank batteries at the same time. Splash proof panels allow for outdoor mounting and hands free operation. Compatible with 12 and 24 volt DC systems. Works with any battery type. Includes DC shunt. One year warranty.