Aquatop's TH-C series of fully submersible titanium heaters with controller offers a compact design for versatile placement and are extremely durable thanks to the tough titanium heating element construct. Temperature range is 68°F - 92°F, and each unit has a separate temperature probe to help ensure even temperature readings. Temperature range is 68°F - 92°F Ultra tough titanium construct Easy-to-read temperature indicator Remote sensor for accurate temperatures For fresh or saltwater systems Perfect for Turtles or Large Fish Heater available in the following models: TH-C100 100 Watt Titanium Heater with Controller Wattage: 100 Watts Voltage/Freq: 110V/50-60Hz Capacity: Up to 35 Gals Height: 16.5cm/6.5in Accuracy: +/- 1.8° F TH-C200 200 Watt Titanium Heater with Controller Wattage: 200 Watts Voltage/Freq: 110V/50-60Hz Capacity: Up to 55 Gals Height: 26 cm/10.25 in Accuracy: +/- 1.8° F