Feature: 1. FAST HEATING: Fish tank water heater adopts alloy heating plate for fast heating, safety and stability, intelligent temperature control system, 1 hour heating, 3 hours constant temperature. 2. PID TEMPERATURE CONTROL ALGORITHM: Aquarium frequency conversion heater adopts PID temperature control algorithm to realize high heat energy and low power consumption. 3. INTELLIGENT FREQUENCY CONVERSION: Aquarium heater utilizes intelligent frequency conversion technology, the power size is freely adjusted by the chip, soft temperature control, always maintain the most economical power constant temperature. 4. DUAL TEMPERATURE SENSING PROBES: Dual temperature sensing probes, real time monitoring of the tank, separated outside the tank controller, one key to control the temperature, high definition LED display, faults at a glance. 5. AI INTELLIGENT HEATING: Fish tank heating rod adopts AI intelligent heating, removable, easy to clean, convenient for long term maintenance, and power off immediately when leaving the water surface during heating work. Specification: Item Type: Aquarium Frequency Conversion Heater Material: ABS Use: Fish Tank Automatic Thermostat Suitable for Water Volume: Up to 700L Suitable for Fish Tank: Approx. 130-200cm / 51.2-78.7in. Package List: 1 x Aquarium Frequency Conversion Heater1 x Fixed Clips1 x Instruction Manual