【 New material 】 The newly developed heating material, precision ceramic heating sheet, is hard and not brittle, without any risk of burst， Explosion material 【 Safety Temperature Control 】 The thermostat keeps a uniform water temperature, which is controlled at 26 ℃ ±1. When the temperature reaches the temperature, the thermostat will stop working automatically. When the temperature is lower than the controlled water temperature, the thermostat will start automatically. If due to improper operation, dry burning in the air, the current automatic controller will control the surface temperature of the heater below 160℃. Even if the temperature sensor burns out, the surface temperature can be controlled below 180℃. 【 Low voltage output 】 the input voltage is 110V, the output safe low voltage 12V, to ensure the safety of friends in the aquarium, heating power 20W specifications set, children pet aquarium friends completely safe. 【 Mini size 】 Small and exquisite design, can be completely attached to the wall of the water tank, used for 2-3.5 gallon small aquarium fish tank, reptile pets, suitable for families and people who just start to pet fish.