Alpha Pro III with Extended 13' HarnessThe Alpha Pro Regulator Kit is a universal regulator for N-type alternators. It transforms every alternator into a fully temp controlled 3-step charger, no with a longer harness with alternator temperature sensor included.Specifications:Link to MasterShunt: YesConnection to Mastervolt Alternator: YesCooling: FanlessNominal Output Voltage: 12V/24VDisplay: LEDMasterBus Powering: Yes Benefits of a Mastervolt Charge RegulatorThe Alpha Pro charge regulator maximizes the output of Mastervolt Alpha alternators or any other alternator by regulating the alternator in a way that the batteries receive the optimum charge. The proven 3-step+ charge method used by all Mastervolt battery chargers guarantees fast and safe charging of your batteries.The Alpha Pro helps to cut emissions by requiring less run time because it maximizes the power from any alternator. A battery can be charged quickly even at very low RPM, especially when connected to an Alpha series alternator. By connecting the Alpha Alternator to a Battery Mate or battery isolator, several battery banks can be charged simultaneously.Does your tachometer sometimes indicate zero while the engine is running? The ‘keep alive’ function of the Alpha Pro gets rid of this problem forever.