JESTOP 100W Submersible Aquarium Heater with External Temperature Controller - Adjustable Mini Turtle Tank and Fish Tank Heater with Suction Cups for Saltwater & Freshwater Review

【OVERHEATING PROTECTION, OUT OF WATER PROTECTION】No need to worry about fish when you going out. The power will be cut off and stop heating automatically if the heater out of water or overheating to protect your fish. When submerged in the water again, the heater will automatically return to normal, no need to unplug the power or reset the controller. 【EXPLOSION-PROOF DESIGN】Made of explosion-proof quartz glass, JESTOP 100W aquarium heater is designed for 10-20 gallons fish tank. The anti-scald heater can effectively protect the fish from scalding, heat water faster and last long. With the highest waterproof level, it is safer than traditional coil heater. 【PRECISE TEMPERATURE CONTROL】Adopt Intelligent Frequency Conversion Technology, the fish tank heater can automatic constant temperature with 1°F accuracy. The heater will automatically start heating when the water temperature is lower than the set values and stop heating when the water temperature reaches the target. 【EXTERNAL TEMPERATURE CONTROLLER】Dual built-in temperature sensor, the water temperature will be displayed on the external temperature controller in real time, no need to put your hands in the water to adjust the Aquarium Heater temperature. With memory function, if power is shut off, the heater will keep the temperature setting, no need to reset the temperature. 【EASY TO SET UP】Please install it vertically or horizontally and ensure the device is fully submerged under the water. Come with 2 strong suction cups, easy to install. The qauarium heater is suitable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems.