Siemens Hygrostat, Wall 250V ac

Subtotal (1 unit)*

£771.03

(exc. VAT)

£925.24

(inc. VAT)

Add to Basket
Select or type quantity
Stocked by manufacturer
  • Ready to ship from 01 June 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£771.03

*price indicative

RS Stock No.:
639-114
Mfr. Part No.:
QFM81.21 / BPZ:QFM81.21
Brand:
Siemens
Find similar products by selecting one or more attributes.
Select all

Brand

Siemens

Product Type

Hygrostat

Mount Type

Wall

Minimum Humidity Setting

15%RH

IP Rating

IP55

Maximum Supply Voltage

250V ac

Minimum Operating Temperature

0°C

Maximum Operating Temperature

70°C

Standards/Approvals

CE, EN 60730-1, RoHS

Width

73mm

Height

246mm

Series

QFM81

COO (Country of Origin):
CH
The Siemens room hygrostat designed to maintain precise humidity control within indoor spaces, featuring a set point adjustment range of 15 to 95% relative humidity. The set point adjuster is conveniently located inside the device, ensuring secure and tamper-proof settings. This hygrostat is ideal for use in HVAC systems to regulate humidity levels in residential, commercial, and industrial environments. Its reliable operation helps maintain optimal air quality by preventing excessive moisture or dryness in indoor air.

Durable and robust design for long term performance

IP55 protection

RoHS compliant

Related links