【Features】 The temperature of this aquarium heater rod can be adjusted. With easy installation, simple operation, high temperature resistance and explosion-proof quartz glass tube. 【Function】 The aquarium water heater is a sensitive temperature controller and overheating protection device, high strength heating wire, even and stable heating, with long service life. 【Application】 With good heat resistance, good insulation, high heat transfer efficiency, strong support hook and suction cup, it works stably and reliably. 【Double protection】 With double waterproof protection, fully submersible design, this heating water machine can precisely maintain the set temperature. 【Guarantee】 Strictly quality controls in every section during manufacturing. If you have any questions about our product, please contact us. We will be very happy to answer questions and resolve any issues for you.