Note: Most slow cookers reach the same max temperature (approx 209°F); the difference is how fast they get there. "Low" takes longer to reach the simmer point.
A slow cooker is a kitchen workhorse, but one of its biggest limitations is the lack of an "auto-off" timer on many older or basic models. If your cooker doesn't have a digital display, you are stuck choosing between undercooked food or mush if you are away longer than the cooking time. crockpot slow cooker timer