MQ Submersible Aquarium Heater Auto Thermostat, 300W Fish Tank Heater with LCD Digital Aquarium Thermometer, Shatter-Proof and B

The aquarium heater tube is made of heat-resistant quartz, excellent in explosion-proof. Works in intermittent operation mode, it provides a constant warm environment for your pet fish to stay healthy. Double seal and protective sleeve design, preventing your pets being scalding. Can be used in marine and fresh water environment. Compact and light weight, easy to hide in the tank. Temp exactness is within 2 degrees in Fahrenheit. Come with a Digital Aquarium Thermometer to detect the water temp. Package Includes: 1 * Aquarium Heater, 1 * Thermometer SZWDJ-hei, 1 * Detachable Shield, 2 * Suction Cups, 1 * User Manual Features of the Aquarium thermometer: LCD display with remote submersible sensor probe Compact design with 2 suction cup mounts Temperature Range: -58 F to +158 F (-50 C to +70C) Resolution : 0.1C Accuracy : +/- 1C Switch between C and F Powered by one LR44 button cell battery Sensor probe cable length: Approx. 3 feet (1 meter) Note: For better experience and safety, please carefully read and follow the user manual. Keep the heater fully submerged in water. Dont bury the heater in sand or mud. Please dont plug in before the heater is well installed. Stick the heater vertically or horizontally onto the tank side near the water intake or on the way of water flow. Please disconnect power and wait for 15 Minutes to cool down before you move the heater or change the water.