CLASS I, GROUPS C&D CLASS II, GROUPS E.F&G SINGLE SWITCH CLASS I, GROUPS C&D CLASS II, GROUPS E.F&G TWO SWITCHES CLASS I, GROUP D CLASS II, GROUPS F&G SINGLE SWITCH CLASS I, GROUP D CLASS II, GROUPS F&G TWO SWITCHES Max temp. setting 1200°F Max temp. setting 700°F Max temp. setting 2000°F Max temp. setting 2000°F Set point adjustment Internal slotted screw Set point adjustment Two Internal slotted screws Set point adjustment Internal screw Set point adjustment External knob or internal screw