Features: The Aquariums Heater with Thermostat automatically shuts off when expose to air to prevent overheating, ensuring precise 18-34℃/64.4-93.2℉ temperature control for health fishtanks environment. Featured a real time temperature display, error indication alerts, and vertical and horizontal installation flexibility with a protective cover for fish safety. Great for fish owners, small tanks enthusiasts, and pet caregivers requiring consistent water temperature management in small Fishtanks setups. Design for freshwater or tanks in homes, office, or seasonal cold climates where stable heating prevent thermal stress on fish and plant. Its glass construction and detachable thermostat enable easy monitoring and adjustment, while the explosionproof design ensures secure placement in tanks of lower water level. Specifications: Product Dimension: Multiple size as pictures shown Type Option: 01(50W)/02(100W)/03(200W)/04(300W)/05(500W) Component: Glass Temperature Control Ranges: 18-34℃/64.4-93.2℉ Package Includes: 1PC Aquariums Heater note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color the item.