Feature: 1. LED DISPLAY: Dual temperature sensing probes, real time monitoring of the situation inside the tank, separate outside the tank controller, one key to control the temperature, high definition LED display, faults at a glance. 2. FAST HEATING: Alloy heating plate, fast heating, safe and stable, intelligent temperature control system, 1 hour heating, 3 hours constant temperature. 3. MAINTAIN CONSTANT TEMPERATURE: PID temperature control algorithm, realizing high heat and low power consumption, using intelligent frequency conversion technology, the power size is freely adjusted by the chip, soft temperature control, always keep the most economical power constant temperature. 4. SUITABLE FISH TANKS: Submersible aquarium heater is designed for fish tanks with a length of 80 to 100CM and a water capacity of less than 300L. 5. REMOVABLE: AI intelligent heating, removable, easy to clean, convenient for long term maintenance, heating work leave the water surfaces immediately power off Specification: Item Type: Aquarium Heater Material: ABS Use: Fish Tank Thermostat Suitable for Water Volume: Below 300L Suitable for Fish Tank: Approx. 80-100cm / 31.5-39.4in. Package List: 1 x Aquarium Heater1 x Fixed Clips1 x Instruction Manual