T-Series submersible heaters combine electronic accuracy, reliable monitoring, and multiple safety features to easily maintain desired aquarium water temperatures. The 360° indicator light ring displays heat mode clearly from any angle, while a convenient large grip dial allows users to adjust the water temperature with ease. In absence of water, the T-Heater automatically cuts power to prevent overheating, while a heater guard provides additional peace-of-mind protection. Key features: 300-Watt heater designed for aquariums up to 300 L Advanced electronic construction provides superior accuracy, stability and long-term performance 24/7 monitoring regulates temperature and avoids large, unsafe fluctuations 360° indicator light ring displays heat mode clearly from any angle (illuminates RED when heating function is engaged and BLUE when desired temperature is achieved) In absence of water, the T-Heater automatically cuts power to prevent overheating Heater Guard provides additional protection against breakage Large grip dial easily adjusts water temperature from 72-90˚F / 22-32˚C Fully submersible design allows for placement anywhere in aquarium either vertically or horizontally For aquarium use only When any electrical equipment is being used around salt water, extreme caution should be taken
