the EHEIM adjustable heater is an ultra-modern electronic thermal device with the best available technology. A jacket made from special laboratory glass increases the heating surface, serves as a heat shield and ensures optimum even heat emission.
 
Benefits of the EHEIM thermostatic heaters
Precise temperature adjustment from 18 up to 34 °C
Simple and safe recalibration (±2 °C)
Temperature control accuracy ± 0,5 °C
Heat kept at a constant level
Heating function is indicated by a control lamp
Completely submersible (watertight)
With automatic dry run shut-off (Thermo Safety Control)
A glass jacket increases the heating surface and ensures optimum even heat emission
Handy cable length ca. 170 cm
Including double suction cup holder
Suitable for fresh and marine water
 
Uses the TruTemp dial based adjustment ring to allow the heater to be calibrated.
 
Specs:
Diameter -36mm
 
Height - (25W)/(50W) 243 mm | (75W) 270mm | (100W) 319 mm | (125W) 319mm | (150W) 345mm | (200W) 406mm | (250W) 452mm | (300W) 506mm
 
Aquarium Size Recommendation -  (25W) 20L | (50W) 25L | (75W) 60L | (100W) 100L | (125W) 150L | (150W) 200L | (200W) 300L | (250W) 400L | (300W) 600L
 
3 Year Manufacturer Gurantee.