Victron Energy ORI121236120 Orion-Tr Smart 12/12-30A Isolated DC-DC charger

• Programmable charge algorithm, and eight pre-programmed battery settings.
• Provides a three-stage charging process: Bulk – Absorption – Float
• Automatically calculates the proper absorption time.
• Bluetooth Smart built-in to monitor and update the controller using smartphones, tablets or other devices
• Input voltage lock-out shuts down the device if the input voltage drops below the lock-out value
• Remote on-off
• Datasheet
• Instruction manual

If you have any programming questions the easiest way to get them answered is to download the Victron Connect App from the Android or iOS webstore, run the app in demo mode, and play with the setting to make sure it will do what you want.  Don't forget to do this in conjunction with reading the instruction manual.