The Xantrex C35, C40 and C60 PWM (pulse width modulator) controllers can be used as PV charge controllers, DC load controllers or DC diversion regulators in 12, 24, or 48 volt systems (except only the C40 can be used in 48 Volt).
They operate only one mode at a time, so to provide both PV charge controller and low batter load disconnect, two controllers must be used. As DC load controllers they disconnect the load at a user-settable low voltage and reconnect at a higher voltage reconnect point. As diversion controllers they send excess power to a "dummy load."
OPTIONS: Battery Temp Sensor with 15' Cable: $29 Battery Temp Sensor with 35' Cable: $32 Digital Display Mountabe: $99 Remote Display with 50' Cable: $126 Remote Display with 100' Cable: $146
Xantrex Charge Controllers 
The Xantrex C35, C40 and C60 PWM (pulse width modulator) controllers can be used as PV charge controllers, DC load controllers or DC diversion regulators in 12, 24, or 48 volt systems (except only the C40 can be used in 48 Volt). 