Elstein screw-in elements of the IOT series are ceramic infrared elements with an E27 screw base.

The emitters of the IOT series are so-called "dark emitters" that do not emit any visible light and, due to this property, the robustness, especially in the heaters' socket area as well as the simple temperature control options (e.g. with standard dimmers), have been used successfully for millions of times, for decades. They are used e.g. in animal breeding or terrariums and are perceived by animals (self-warm and cold-blooded), especially during the night, as a non-disturbing source of warmth.

The standardized E27 thread enables simple and safe installation, as the elements can be screwed into porcelain sockets or metal sockets with a porcelain insert like lightbulbs.

Elstein IOT infrared elements are suitable because of their simple connection options for both individual operation and for setting up groups of heaters. The possible uses are diverse and, in addition to animal breeding and terraristics, particularly extend to the areas of medical and gastronomy technology.

The standard IOT/75 and IOT/90 emitters are available each in two power levels of 60 W and 100 W or 150 W and 250 W.

Standard Version

  • operating voltage 230 V

  • ceramic hollow casting

  • screw cap E27

  • UR/UL certificate for many variants


  • special wattages

  • special voltages

  • special colours

3D-Ansicht IOT
On larger screens a 3D view of the product ist available here.

Technical data




The power can be adjusted by using proprietary power controllers or dimmers, as a conventional light bulb.


Porcelain sockets or metal sockets with porcelain inserts are to be used both for electrical and mechanical connection. The sockets must not contain any plastic components.

The national safety regulations must be complied with for the respective application, for example, the IEC or EN standard 60519-1, Safety in electrical heating installations.

Further information and safety instructions are mentioned in the mounting sheet, which is attached to each heater.

Subject to technical modifications of the products. Products can differ from illustration. Mounting and products dimensions in mm (metric).

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