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Electronic Hygrotherm ETF012

* Temperature and humidity adustable
* Optical operating display (LED)
* High switching capacity
* Clip fixing

The Electromechanical hygrotherm senses the ambient temperature and relative humidity in an enclosure with electric/electronic components and turns on a heater (or alternatively a fan) at either set point, helping prevent the formation of condensation in the enclosure. The LED integrated in the adjustment knob on the active controller is lit when the connected device is in operation.

Switch difference (temperature) 2K ( ± 1K tolerance) at 25 ℃ /77 ℉ (50% RH)
Switch difference (humidity) 4% RH(±1% RH tolerance) at 25 ℃ /77 ℉ (50% RH)
Reaction Timer 5 sec.
Contact type change-over contact (relay)
Contact resistance < 10m ohm (incidental connection line)
Service life NC: 50 000 cycles
NO:100 000 cycles
Max. switching capacity
(relay output)
NC:240VAC, 6(1)A
NO:120VAC,8(1.6)A
NC:240VAC, 6(1)A
NO:120VAC,8(1.6)A
100VDC at 24 VDC
EMC acc. to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3
Optical indicator LED
Connection 5-pole terminal, clamping torque 0.5Nm max.: rigid wire 2.5mm², stranded wire (with wire end ferrule) 1.5mm²
Mounting clip for 35mm DIN rail, EN50022
Casing plastic according to UL94 V-0, light gray
Dimensions 77 x 60 x 43mm
Weight approx. 200g
Fitting position vertical
Operating/Storage temperature 0 to +60    ℃ ( +32~+140 ℉ )/ -20 to +70°C(-4~158 ℉ )
Operating/Storage humidity Max. 90% RH (non-condensing)
Protection type IP20

Art. No. Operating voltage Setting range Approval
01230.0-00 230VAC, 50/60HZ 50 to 90% RH CE
01230.9-00 120VAC, 50/60HZ 50 to 90% RH CE
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