Size:30W Quantity:1 welcome to my store , Hope you have a pleasant shopping trip! Features: 1.The heater must be fully submersed into the water.2.Over-temperature protection to prevent boiled fish. Working light indication. Red light: working heating Green light: keeping warm3.Automatic constant temperature heating rod, mini, ultra-thin and compact, safe to use at low pressure, and does not occupy space in the fish tank4.Disconnect power socket and wait for 15 minutes before changing water or remove heater.5.Place the heater in the way of water flow and don't bury it.SpecificationsInput voltage: AC100-240V 50/60HzOutput voltage: DC 24V 0.5APower: 10W 20W 30W (optional)Heating rod size: 10.0cmx3.8cmx1.2cmSuitable water volume: 10W-2.0-5.0L/20W-4.0-8.0L/30W-6.0L-10.0LPackage List:1X Mini Aquarium HeaterNotes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. note :The heater must be fully submersed into the water. High Temperature-resistant Aluminum Alloy Oxide Shell, Strong and Anti-drying, Automatic Constant Temperature 28 , Precise Constant Temperature. Stop Heating When the Set Temperature Is Reached Preset Temperature Has Been Set to 28C, Appropriate For most Tropical Fish, Shrimp and Aquatic Plants Requiring Stable Conditions suit for freshwater and seawater, suitable for heating and insulation of small fish tanks, low-water turtle tanks and pet drinking fountains SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. See more product details note :The heater must be fully submersed into the water. High Temperature-resistant Aluminum Alloy Oxide Shell, Strong and Anti-drying, Automatic Constant Temperature 28 , Precise Constant Temperature. Stop Heating When the Set Temperature Is Reached Preset Temperature Has Been Set to 28C, Appropriate For most Tropical Fish, Shrimp and Aquatic Plants Requiring Stable Conditions suit for freshwater and seawater, suitable for heating and insulation of small fish tanks, low-water turtle tanks and pet drinking fountains SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.