- Efficient temperature & humidity control
- Wide voltage range
- Operating temperature down to -40 °C
- High switching capacity
- With external sensor
The ETF 012 senses the ambient temperature and relative humidity in an enclosure. Depending on which contact combination is chosen, it then turns on or off a connected device if either the temperature is below or the humidity is above the set point. The integrated LED in each adjustment knob i lit when indicating the active function.
The external sensor can be positioned freely anywhere in the enclosure for precise measurements.
| Switching difference (temperature) | 2 K (±1 K tolerance) at +25 °C (+77 °F), 50 %RH |
|---|---|
| Switching difference (humidity) | 4 %RH (±1 % tolerance) at +25 °C (+77 °F), 50 %RH |
| Reaction time (humidity) | approx. 5 sec. |
| Contact type | change-over contact (relay) |
| Service life | VDE: NO/NC > 15,000 cycles UL: NO/NC > 30,000 cycles |
| Max. switching capacity (relay output) | 10 A resistive / 1.6 A inductive @ AC 240 V 0.6 A @ DC 60 V¹ |
| Max. inrush current | AC 30 A for 10 sec. |
| Connection | 5-pole terminal, clamping torque 0.5 Nm max.: solid/stranded² wire - AWG 14 max. (2.5 mm²) |
| Housing | plastic, UL 94V-0, light grey |
| Mounting | clip for 35 mm DIN rail, EN 60715 |
| Mounting position | vertical |
| Operating/Storage temperature | -40 to +140 °F (-40 to +60 °C) |
| Operating/Storage humidity | max. 90 %RH (non-condensing) |
| Dimensions | 3.0 x 2.4 x 1.7" (77 x 60 x 43 mm) |
| Weight | approx. 3.5 oz. (100 g) |
| Protection type | IP20 |
| Approvals | UL File No. E164102, VDE, EAC |
¹ not UL confirmed
² When connecting with stranded wires, wire end ferrules must be used.
| Part No. Cable - 1 m | Part no. Cable - 2 m | Operating voltage | Setting range - temperature | Setting range - humidity |
|---|---|---|---|---|
| 01231.0-00 | 01231.0-01 | AC 100-240 V, 50/60 Hz (min. AC 90 V, max. AC 265 V) | 0 to +60 °C | 50 to 90 %RH |
| 01231.9-00 | 01231.9-01 | AC 100-240 V, 50/60 Hz (min. AC 90 V, max. AC 265 V) | +32 to +140 °F | 50 to 90 %RH |
| 01231.1-00 | 01231.1-01 | DC 24-48 V (min. DC 20 V, max. DC 60 V) | 0 to +60 °C | 50 to 90 %RH |
Dimensioned Drawing
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- ETF 012 | Hygrotherm with external sensor
