Aquastat Controller, High Limit, Strap on Mounting, Manual Reset, Immersion Device for Limiting or Regulating Temperature of Liquids, 3/8" x 2 7/8" Copper Bulb, SPST Contacts Break on Temperature Rise, Horizontal or Vertical Mounting, 100-240 Degree Operating Temperature Range, 1 1/2" Capillary Length, Includes Bracket for Strap on Mounting, Factory Stop Set at 240 Degree