Enclosure Humidistat, Adjustable, 40 → 90%RH, 120 V ac, DIN Rail

  • RS Stock No. 697-4421
  • Mfr. Part No. 01245.9-00
  • Manufacturer STEGO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): HU
Product Details

Stego AC Electronic Hygrostats, EFR 012 Series

These sense the relative humidity in an enclosure with electric/electronic components and turn on a heater at the set point, helping prevent the formation of condensation in the enclosure. The adjustment knob contains an LED which indicates when the connected heater is in operation.

Adjustable and pre-set relative humidity
Optical operating display (LED)
High switching capacity
Clip for 35mm DIN rail, EN 50022
Temperature compensated
Small size 64.5 x 42 x 38 mm
Plastic casing according to UL94 V-0, light grey
Maximum switching capacity (relay output): 250Vac, 8(1.6)A; 120Vac 8(1.6)A; 24Vdc 4A
Service life >50,000 cycles
EMC according to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3
Connection 5-pole terminal


clamping torque 0.5Nm max: rigid wire 2.5mm2; stranded wire (with wire end ferrule) 1.5mm2
Operating/storage temperature 0 to +60°C/-20 to +70°C
Maximum storage humidity 90% RH (without condensation)



Attribute Value
Adjustable or Preset Adjustable
Mount Type DIN Rail
Activation Humidity 40 → 90%RH
Supply Voltage 120 V ac
Maximum Humidity Setting 90%RH
Minimum Humidity Setting 40%RH
12 In stock for delivery within 2 working days
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
1 - 4
5 - 9
10 - 24
25 - 49
50 +
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