Hygrometer controls cabinet climate.

The new ETF 012 from STEGO is the evolutionary answer to increasing demands in control cabinet climate management. Building on decades of application experience, the proven hygrotherm has been completely redesigned – setting new standards in functionality, space efficiency, and global usability.

At just 35 mm wide, the ETF 012 saves valuable space on the DIN rail inside the control cabinet. This not only allows more flexible positioning but also creates room for additional components – a crucial advantage in compact enclosures and control environments. The wide voltage range from 24 V to 240 V AC and 24 V to 60 V DC eliminates the need for multiple variants, reducing inventory and installation effort.

The ETF 012 features modern push-in terminals. Electrical connections are established quickly, securely, and completely without tools – a significant simplification compared to conventional screw terminals. This saves installation time and minimizes potential wiring errors. An integrated LED reliably indicates the device’s operating status.

The redesigned electronics of the ETF 012 measure temperature and humidity accurately and respond rapidly to changing ambient conditions. The adjustable temperature range extends from 0 to +60 °C, while relative humidity can be regulated between 50 and 90 %, each with a hysteresis of ±1. An optimized internal layout, with heat-emitting components positioned in the upper housing section, further enhances measurement performance.

Electronic hygrotherms such as the ETF 012 monitor temperature and relative humidity inside control cabinets and technical enclosures. When defined thresholds are exceeded, they automatically activate heaters or fans – effectively preventing condensation. Excess humidity can impair insulation, promote corrosion, or, in the worst case, cause short circuits. Hygrotherms therefore play a key role in maintaining operational safety and extending the service life of sensitive components – especially in applications exposed to fluctuating environmental conditions or low ambient temperatures.

With its dual °C/°F scale and international certifications (UL, CE), the ETF 012 is suitable for worldwide use. Its robust design enables operation at ambient temperatures from –40 to +70 °C and up to 95 % relative humidity (non-condensing). High switching capacity (16 A at 240 V AC) and long service life make it the first choice for demanding applications in control cabinets and technical installations – particularly in mechanical engineering, infrastructure, wind energy, and industrial systems.

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