scale range 30...100%rh
OEM room version
The hygro module HM120 is a humidity-dependent switch that can be fitted in equipment such as hygrostats, humidifiers, dehumidifiers, ventilating fans, driers and many more. The module represents an on-off controller with changeover contact. The switch connection is via a connecting terminal, but can also be supplied ready-made with cable connections. Several versions of different lengths are available as a shaft. Protection of the module is of the IP00 type.
Technical data
Measuring element
Control range
Lifetime
Maintenance-free in pure ambient air
Control range
Lifetime
Maintenance-free in pure ambient air
hygroskopic POLYGA®
40 ... 90 % RH
ca. 6.000 breaking cycles
40 ... 90 % RH
ca. 6.000 breaking cycles
Influence of temp. at 23 °C
≤ ± 0.2 % RH / K
Changeover contact
Breaking capacity max. 250 V AC
Ohmic load, dehumidification 0.1...5A
Ohmic load, humidification 0.1...2A
Inductive load 0.1...1A (power factor >0.8)
Ohmic load, dehumidification 0.1...5A
Ohmic load, humidification 0.1...2A
Inductive load 0.1...1A (power factor >0.8)
Gold contact
Breaking capacity max. 48 V AC and
1...100 mA
1...100 mA
