This system approach simplifies the complete installation Package includes: Pump Plus 1000 PLC with display and a 12V Auto Pump. 12V, 100 PSI Max, air compressor Auto Pump, see pg. 43 for specs and pg. 47 for optional accessories_15A battery charger with a 3A battery saver. Microprocessor controlled, completely automatic operation regulates the output to a single battery bank. Precision voltage controller senses the battery voltage, eliminating the need for sense wires. Programmable Parasitic Load Compensation allows for the user to input the total accessory load on the vehicle (in amps). This allows the charger to shift the absorption stage set point so the battery voltage drops to the float voltage when desired current is reached�Battery selection switch to select Gel Cell, Lead-Acid, AGM or Odyssey. Float/3-Step Charge Mode Selection Switches. Automatic current limit. Battery Saver On/Off switch is used to bypass the Battery Saver and apply all 18A to charge the battery. Patent pending. Choice of Remote Display: Bar Graph, Status Center, or Status Center in a watertight case. Air Compressor power mode selector switch_DC Powered full time from the vehicle�s battery_AC Powered only from the battery when the vehicle is plugged into the shore line _Automatically shuts off the compressor when disconnected from the shore line, taking the 12A load off the vehicle�s battery