The EHEIM thermocontrol bar heater is different from the EHEIM thermocontrol due to the additional plastic protection which ensures high mechanical stability. As usual from EHEIM both heaters are equipped with an LED light to control the heating function and a dry-running protection.Advantages of the EHEIM thermopreset heaterHigh user-friendliness thanks to preset temperature. Due to short lengths also usable in small basins. Very narrow and therefore less visible in the aquarium. Plastic protection ensures high mechanical stability. High temperature accuracy due to electronic control. Even heat distribution thanks to the highly efficient heating element. With dry-running protectionA control lamp indicates the heating functionSecure fixing by means of the included suction cups. Suitable for freshwater and marine water3 years warranty. The new heater is available in four different performance classes which are indicated by the number in the product name: thermopreset50 (50W). Common to all variants is the slim design with a diameter of only 28 cm and a length of 17 to 25 cm the heater is hardly visible also in small basins.