Here is the description of the compact battery monitor:

• Functional scope: This compact battery monitoring system is designed for battery systems consisting of a 12-volt starter battery and one or more 12-volt consumer batteries connected in parallel.
• Display: The 2.4-inch TFT touch screen shows all important data at a glance without having to press a button.
• Brightness sensor: An integrated brightness sensor automatically adjusts the screen brightness in the dark.
• Data displayed: Information such as the current voltage, the current charging or discharging current, the remaining time, the battery temperature and the charge level of the consumer batteries are displayed.
• Further information: The number of charging cycles, deep discharges and the average depth of discharge are also displayed.
• Warning function: There is an adjustable acoustic warning of dangerous deep discharge.
• Compatibility: Suitable for all battery types such as acid, GEL, AGM and LiFePO4.