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Hygro Module HM120

  • with Polyga® measuring element 
  • scale range 30...100%rh
  • OEM room version

General information

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

scale range 30..100%rh
measuring accuracy ±3%rh
range of operation 35...95%rh
measuring medium air, pressureless, non-aggressive
switching difference (microswitch) ref. to 50%rh ... approx. 4%rh
breaking capacity
max. 250VAC and
0,1 ... 5A
ohmic load for dehumidifying
0,1 ... 2A
ohmic load for humidifying
0,1 ... 1A for inductive load with cos φ = 0,7
lifetime 100.000 breaking cycles
Please observe the notes on voltage.
optional microswitch with gold contact
breaking capacity
max. 48 VAC and
1...100 mA
allowable operating temperature 0...60°C
medium temp. coefficient -0.2%/K relative to 20°C and 50%rh
adjustment at average air pressure 430 m NN
allowable air speed 15m/sec
half-life period at v=2m/sec 1.2min
fixing only with plastic screws M3
contacting connecting terminals
applied directives / standards
low-voltage directive 2014/35/EU
EMC directive 2014/30/EU
DIN EN 60730-1:2012-10
DIN EN 60730-2-13:2008-09
type of protection IP00
measuring element Polyga®-measuring element, water resistent, washable
dimensions 59x47x33 mm
weight approx. 0.25 kg

Do you have questions on this product?

Your contact person:

Badger Meter Swiss AG
Mittelholzerstrasse 8
CH-3006 Bern