Completely submersible, these Visi-Therm heaters have proven to be dependable and accurate. They deliver the ultimate in direct-set control, compact double-sealed durability and certified accuracy to within one degree. A simple “click” of the dial chooses the ideal water temperature, while easy-to-view sliding scale tells the exact setting and new top view shows the setting at the dial. Advanced mounting bracket attaches to glass and provides three window positions to see temp display. Thermostat reads in both °F (65–89°) and °C (18–32°) and is Triac-equipped to switch on and off with lower voltage. Mesh heating element with mica core used in conjunction with epoxy fill ensures efficient transfer and eliminates rattling coils and tubes. Heaters work in fresh and salt water and are UL-listed. Cord length is 3’ (1 m). One-year warranty.