Roomostat RH - 2
temperature Temperature
temperature Luftfeuchtigkeit

Room hygrostat HYGRASREG® RH-2

Product group: WG01

In Stock

Usually ships in 1 to 3 days
85,49 €
101,73 € incl. VAT + shipping


Room hygrostat HYGRASREG® RH - 2
Mechanical HYGRASREG® RH - 2 room hygrostat with switching output (with single-pole micro-switch for use as two-position controller with humidity sensor). The device operates without external voltage and features a humidity measuring element made of stabilized plastic fabric plus an optional setpoint setter for switchpoint adjustment (external or internal setting). It has an elegant plastic housing with snap-on cover, base with 4-hole attachment for mounting on vertically or horizontally installed in-wall flush boxes, with predetermined breaking point for on-wall cable entry.
The RH - 2 device has been designed for use as a minimum or maximum hygrostat for controlling and monitoring the relative humidity in office and residential rooms, bathrooms, laboratories, control cabinets, computer rooms, etc. It is used in dust-free, unpolluted, non-aggressive air.

Technical details

Switching capacity (Contact load)
24 V AC/ DC
Dehumidifying: 5 (0.2) A, min. 100 mA
Humidifying: 3 (0.2) A, min. 100 mA
Operating difference
< 8 % RH
1 changeover contact, (potential-free)
Setting range
25...95 % r. H.
Sensor element
plastic fibres
Electrical connection
0.14 - 2.5 mm²
via terminal screws on circuit board
plastic, material ABS,
colour pure white (similar to RAL 9010)
Housing temperature
0...+40 °C
98 x 98 x 39 mm (Baldur 2, with Potentiometer)
wall mounting or on in-wall flush box, Ø 55 mm,
base with 4 holes, for attachment to vertically or
horizontally installed in-wall flush boxes for rear cable entry,
with predetermined breaking point for cable entry
from top/ bottom in case of plain on-wall installation
max. 3 % r. H.
Protection class
III (according to EN 60 730)
Protection type
IP 30 (according to EN 60 529)
CE conformity,
EMC directive 2014/ 30/ EU,
low-voltage directive 2014/ 35/ EU
Sensor element
humidifying: wire terminals 1 and 3
dehumidifying: wire terminals 1 and 2