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Features: 1. Thermal spraying glass, speed up the heating process, higher efficiency.2. External design, easy to install and doesn’t occupy space in the tank.3. Two sensors to exam the temperatures of water inlet and outlet.4. Auto power off safety system when- Temperature is over 36℃- Temperature is 3℃ more than setting temperature- Difference between two sensors is over 5℃ How to use: 1. Connect the water inlet at the downside of the heater and water outlet at the topside of the heater. 2. Press the button to set the temperature. 3. Please unplug the heater before put your hand inside the tank. 4. External heater is only for indoor use and only use outside the tank. 5. Warranty only applies to the heater, not to the animals, plants or equipments of the tank. Accuracy ±1°C / Temperature range 20~35°C

    150w/300w/500w In-Line External Heater AQUARIUM HEATER - 150/300/500 WATT 1/2"-5/8" (300 Watt 1/2"(12/16mm) Hose)


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