1、Ni-Cr heating wire fast heat conduction, stable, energy saving, durable, not affected by magnetism. 2、Automatic intelligent constant temperature. 20℃-34℃ cycle temperature control, convenient and quick. 3、Using 23mm outer diameter thickened quartz tube, heating speed is faster, heat resistance, explosion‑proof more stable. 4、Selected silicon carbide layer body, stable heat conduction. HD LED control display, real-time monitoring of the state of the fish tank. 5、High safety factor, providing over-temperature alarm, low-temperature alarm, sensor failure display, and over-temperature protection. Item type: Fish Tank Heating Rod Material: ABS+Quartz Glass TubeColor: As Pictures Shown Size: Approx. 29x5.5x4cm/11.4x2.2x1.6in Temperature Control Range: 20℃-34℃ How to Use: 2.Place the position, put the heating rod as far as possible in the position of water circulation, so that the heat of the heating element can circulate into the water in the tank. 3. It is forbidden to insert the heating rod body into the sand or mud at the bottom of the cylinder to prevent unnecessary trouble caused by burning the rod body. 4.Because the water-discharging and power-off induction device is located in the upper half of the heating rod, it is forbidden to install the rod body upside down, with the head down and the heating element up to avoid water shortage, the heating element will be exposed in the water, and the heating will cause damage. 5. The temperature setting button in the middle of the power cord must be exposed out of the water, and be careful not to damage it due to water entering. 1 x Fish Tank Heating Rod 2 x Suction Cup 1 x Manual