- Precise Temperature Control: Featuring advanced smart inverter technology, this thermostat provides accurate temperature regulation for your aquarium heater. The built-in chip ensures consistent heating that surpasses traditional knob controls, while the easy-to-read display allows for quick temperature checks. - Safety Features: Equipped with overheating protection, this fish tank heater automatically shuts off if the water temperature exceeds safe limits. Additionally, it retains your last temperature setting even after a power outage, ensuring that your aquatic environment remains stable. - Compact Design: Measuring just 5cm (1.97 inches) in length, this mini aquarium heater is designed to occupy minimal space and can be easily concealed within your tank. It accommodates a temperature range of 18°C-34°C, making it versatile for various fish species. - USB Powered: The heater operates on a safe 5V/2A USB power supply, eliminating concerns about electrical hazards for your fish. It is compatible with any standard 5V/2A power adapter (not included) or power bank (not included), providing flexibility in power options. - Practical Applications: Ideal for small aquariums, this heater is perfect for setting up a new tank or maintaining optimal conditions in a nano setup. It suits both freshwater and saltwater environments, ensuring your fish thrive in a comfortable temperature range. - User-Friendly Interface: The intuitive display and precise control make it easy for hobbyists of all levels to manage their aquarium's climate effectively, ensuring a healthy habitat for your aquatic life.