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)
IP20

VDE