Aqua Medic Micro Heater is a adjustable heater with USB connection for smaller aquaria. The Aqua Medic Micro Heater is suitable for small aquaria with a maximum water volume of 10 l. The Aqua Medic Micro Heater can be flexibly positioned using the bracket supplied. Intelligent electronics keep the water in the aquarium at the set temperature. The Aqua Medic Micro Heater is equipped with overheating and dry-running protection. The external controller with display makes it easy to set the desired water temperature. You can choose between Celsius and Fahrenheit.technical data Aqua Medic Micro Heaterfor aquaria up to 10 lVoltage 5 V power consumption app. 10 WUSB operationcable length app. 130 cmtemperature accuracy: +/- 1Cadjustment range: 18C - 34Ccontrol steps 0,5Cdimensions app. 20 mm, L 55 mm (without bracket)a 5 V, min. 2.4 A, USB power pack is required for the operation (not included in delivery)