Tetra HT Submersible Aquarium Heater With Electronic Thermos

All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached..All Tetra HT Heaters will shut off if an electrical short is detected for your safety.The HT10 uses a built in electronic theromstat to automatically maintain water at 78 F which is ideal for most tropical fish. No adjustment is requried.Ideal for aquariums between 2 to 10 gallons with hoods or glass canopiesThe HT heater is fully submersbile and can be installed vertically or horizontally. Its small footprint makes it easy to conceal behind plants or other decor.Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.All Tetra HT Heaters will shut off if an electrical short is detected for your safety. MORE DETAILS asin B000OQO69Q batteries Product Specific batteries required. bestsellersrank 16 in Aquarium Heaters datefirstavailable March 22, 2007 department UnisexAdult itemmodelnumber 26447 manufacturer Tetra manufacturerrecommendedage 1 month and up productdimensions 5.25 x 1.62 x 3.5 inches 7.84 ounces