ETF200 Hygrostat

This relative humidity hygrostat is available as pre-set, ETF200, or adjustable, ETF2000. It activates a device, such as a heater, within the enclosure, either at the pre-set level, 65%, when the relative humidity has been exceeded, or at a level set by the user, which could be between 40-90% humidity.

CE UKCA EAC cRUus_UL Recognized
ETF200 Product Image
ETF200 Catalogue drawing image
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Item list

Item no. Description Description Setting range Weight
ETF200 Hygrostat Fixed 65% Pre-set hygrostat 65% 0.05
ETF2000 Hygrostat 40-90% Adjustable hygrostat 40% to 90% 0.05

Technical data


Mechanical hygrostat designed to control heaters when the pre-set or fixed relative humidity is exceeded. The relative humidity must be kept above the dew point to prevent condensation and corrosion inside the enclosure. Mounting clip for 35 mm DIN rail (EN 60715).


Plastic according to UL94 V-0

Switch capacity:

250 V AC, 5 A. DC, 20 W, (30 W ETF2000).

Operating temperature:

0 °C to +60 °C.

Service life:

> 50,000 cycles.


2 pole terminal for 2.5 mm².


IP 20.


CE, EAC, cULus_UL Listed.


RAL 7035.

Pack quantity:

1 piece.



Fixed (ETF200) or adjustable (ETF2000) relative humidity hygrostat, with a normally open (NO) contact.


The pre-set hygrostat allows energy to flow to a device (normally a heater) when the 65% relative humidity setting has been exceeded (ETF200). The adjustable hygrostat allows energy to flow to a device (normally a heater) when the relative humidity level that the user has set, has been exceed, this will range between 40-90%.


The installed devices, such as fan heaters, automatically turn on or off when they are required, which reduces the operational cost of the control panel. Managing the relative humidity within the enclosure will prevent water condensation from occurring.

Image (JPG 800 x 518 px) ETF200 Catalogue drawing image 74 KB
Image (JPG 600 x 600 px) ETF200 Product Image 90 KB
Mounting instructions document (PDF) Thermal Management ETF200 397 KB
Product sheet (PDF) ETF200(RUSSIAN) 114 KB
Document (PDF) CE UKCA 100 KB
Document (PDF) EAC 881 KB
Document (PDF) cRUus_UL Recognized 207 KB