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Comparison : Item # B200-A, B-200 Series 50 to 300 Approximate Degree Fahrenheit (ºF)Temperature Range Surface Mounting Temperature Controller
Item # B200-B, B-200 Series 85 to 250 Approximate Degree Fahrenheit (ºF) Temperature Range Surface Mounting Temperature Controller
Item # B200-C, B-200 Series 50 to 600 Approximate Degree Fahrenheit (ºF) Temperature Range Surface Mounting Temperature Controller