Hygrostat RH-2

The mechanical room hygrostat RH-2 with switching output, works without external voltage, but with humidity measuring element for switching point adjustment. The housing is made of plastic ABS, the lower part has a 4-hole fixing for mounting on vertically or horizontally installed flush-mounted boxes incl. predetermined breaking point for surface connection.



  • Color pure white (similar to RAL9010)
  • 1 changeover contact
  • Setpoint adjuster 30 to 95 % r. h.
  • Square shape


Technical Data
Switching capacity V AC/DC 24
Contact load, max. A dehumidify: 5 (0,2), humidify: 3 (0,2)
Contact load, min. mA min. 100
Switching difference % ca. 4
Contact   1 changeoverr, (potential free)
Adjustment range % 25 to 95
Sensor element   plastic fibre
Electrical connection mm² 0,14 to 2,5 via screw terminals on PCB
Housing   synthetic material, material ABS, Colour pure white (similar to RAL 9010)
Housing temperature °C 0 to +40
Dimensions mm 98 x 98 x 39 (Baldur 2, with Poti)
Assembly   Wall mounting or on flush-mounted box, Ø 55 mm,
base part with 4 holes, for mounting on vertically or horizontally installed flush-mounted boxes for cable entry at rear, with predetermined breaking point for cable entry at top/bottom with surface-mounted box
Tolerance % max. 3
Protection class   III (acc. EN 60730)
Degree of protection IP 30 (acc. EN 60529)


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