Dual-system temperature control and overheat protection technology ensures safe heating by activating a backup system if one fails. Built-in dual temperature probes provide near-zero temperature difference and precise control, preventing fish from getting sick due to temperature variations. Power-off protection prevents dry burning when the heater is removed from water. Overheat protection automatically stops heating when the temperature exceeds 36 degrees Celsius, with an indicator that flashes. Precision, waterproof, durable, and corrosion-resistant titanium plate heater designed for energy efficiency and long-term use. This heater operates on a voltage range of 110-240V and features a dual relay control method. It has a temperature control range of 20-34°C with an accuracy of +0.5°C, making it suitable for aquariums sized 120-150CM and water volumes of 300-500L. The product dimensions are 29x8.5x3.5CM, and it comes with a cable length of 150+170CM. The plug type is US Plug, compatible with Canada, India, Mexico, Thailand, the United States, the Philippines, Taiwan, and more. Voltage: AC110V Color: As Shown Material: ABS Package Contents: 1*Fish Tank Heater Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.