Feature: 1. [Temperature Display] Fish tank temperature controller has an external probe, and can also display the temperature of the fish tank water to observe the temperature of the water in time. 2. [Point Control] Fish tank thermostat adopts the proportional calculus algorithm for temperature control, which can keep the temperature constant at one point for point control. 3. [Stable] During the temperature control period of the aquarium thermostat, the heat output is relatively linear, and the temperature rise is relatively gentle, and there will be no sudden change in temperature. 4. [Immediate Feedback] Aquarium temperature controller has sensitive performance, fast induction, real time feedback of real time temperature, and monitoring of fish tank temperature at all times. 5. [Mode Switching] Press and hold the external adjustment button of the over temperature controller for 5 seconds to switch the temperature display mode between Celsius and Fahrenheit at will. Specification: Item Type: Aquarium Temperature Controller Material: ABS Probe Length: Approx. 200cm/78.7in Application: Fish Tank Over Temperature Protector Plug Voltage: 110-220V Light Display: Display Blue Light: Indicates Failure and Immediately Stop Power Supply Displays Red Light: Indicates Normal Operation Temperature Control Range: 28-33℃ Rated Power: 2000W. Package List: 1 x Aquarium Temperature Controller2 x Suction Cup1 x Hook Note: 1. This product is not a heating rod, but prevents the heating rod from overheating and causing the water to boil and boil the fish.2. Manual measurement, please allow some errors.