Precise, reliable aquarium temperature monitoring for everyday use Key benefits Accurate control: Measures water temperature from -9.9 to 50 C with high-precision sensor chip and updates every 5 seconds so you always know your tank conditions. Long runtime and easy charging: Built-in, energy-efficient rechargeable 5V battery provides up to 45 days of continuous operation and recharges via USB-C to reduce interruptions. Simple, unobtrusive operation: Streamlined wireless design minimizes visual clutter in the aquarium area. Quick fingertip temperature checks and a 30-second automatic switching feature improve convenience and save power. Visible in any light: Special backlighting and a high-contrast 5 cm digit display ensure clear readings at all ambient brightness levels. What it does and why you need it Keeps temperature monitoring continuous and precise, helping prevent stress or loss of sensitive fish, corals, or plants caused by unnoticed temperature shifts. Reduces maintenance time with long battery life and USB-C charging, so you spend less time replacing batteries and more time on tank care. Fits cleanly into any aquarium setup with a wireless, low-profile design that avoids distracting cables or bulky equipment. Key features and performance Measurement range: -9.9 to 50 C Update interval: every 5 seconds Power: rechargeable 5V battery, up to 45 days continuous use Charging: USB-C Display: backlit, high-contrast 5 cm digit readout Operation: fingertip temperature check; 30-second automatic switching for convenience and power saving Design: wireless, streamlined to integrate with aquarium environments Compatibility and practical details Designed for aquarium use (freshwater and marine environments). Wireless form minimizes interference with filters, heaters, and other equipment. Display size and high contrast make it suitable for placement where visibility is important (stand, hood, or nearby shelf). USB-C charging provides broad compatibility with common chargers and power banks. Typical use scenarios Home freshwater aquarium: Monitor temperature for community fish tanks and planted aquariums to maintain stable conditions for fish health and plant growth. Reef and marine tanks: Frequent 5-second updates and precise sensor readings help protect sensitive corals and invertebrates from rapid temperature changes. Quarantine or breeding setups: Quick fingertip checks and long battery life support close monitoring during critical quarantine periods or breeding cycles. What to expect Reliable, regular readings with a large, easy-to-read display. Reduced charging frequency thanks to efficient power use. A discreet, wireless unit that integrates into your aquarium environment without adding visual clutter. Technical summary Temperature range: -9.9 to 50 C Update frequency: 5 seconds Battery: rechargeable 5V, up to 45 days continuous operation Charging: USB-C Display: backlit, 5 cm digits Operation features: fingertip activation for temperature check, 30-second automatic switching Intended application: aquarium temperature monitoring (freshwater and marine)