The Ironman 275 Amp Dual Battery manager allows the user to override the automatic function and link the two batteries together. This can be done by turning the yellow knob on the unit or by pushing the override switch located in the vehicle.
High Amperage capacity
Cut in when main battery above 13.7V
Isolates main battery below 12.2V
Dual manual override
Additional override switch
Monitor dims with headlights on
Easy to install