1、Automatically power off without water to prevent dry burning. 2、Double-digit display, high definition for easy observation of fish tank temperature. 3、Safety ABS cover, removable jacket design, high temperature resistance, fast heat dissipation. 4、Detachable radiator for easy cleaning. 5、Overtemperature protection, when the water temperature is over 36°, the indicator light flashes, and the heater will automatically cut off. When the temperature rises to 34°, the heater returns to normal operation. Features: Automatically power off without water to prevent dry burning. Double-digit display, high definition for easy observation of fish tank temperature. Safety ABS cover, removable jacket design, high temperature resistance, fast heat dissipation. Detachable radiator for easy cleaning. Overtemperature protection, when the water temperature is over 36°, the indicator light flashes, and the heater will automatically cut off. When the temperature rises to 34°, the heater returns to normal operation. PTC ceramics are used for heat conduction, radiation-free and pollution-free, which greatly improves the electric energy conversion rate. Specification: Item Type: Fish Tank PTC Heater Model: ZY-888 Material: ABS Color: Black Rated Voltage: 110-240V Frequency: 50/ 60Hz Plug: AU Plug Power: 300W, 500W, 800W, 1000W (Optional) Model Rated Power Suitable Water Capacity Size (cm/ inch) ZY-888 300W Below 200L 20x8x2/  7.87x 3.15x 0.79 ZY-888 500W Below 300L 20x8x2/  7.87x 3.15x 0.79 ZY-888 800W Below 400L 25x8x2/  9.84x 3.15x 0.79 ZY-888 1000W Below 500L 25x8x2/  9.84x 3.15x 0.79 Packing List: 1 x Fish Tank PTC Heater 1 x Suction Cup Fixing Bracket 2 x Protective Mesh