MFR012 Mechanical Hygrostat DIN Rail Humidity Controller

Key Specifications

Technical Item	Specification
Switching difference	4 %RH (±3 % tolerance) - at 50 %RH
Permissible air velocity	50 ft/sec (15 m/s)
Contact type	SPDT / change‑over contact
Service life	＞50,000 cycles
Min. switching capacity	100 mA @ AC/DC 20 V
Max. switching capacity	5 A resistive @ AC 250 V DC 20 W
Housing	PC
Weight	60 g
Mounting	clip for 35 mm DIN rail
Dimensions	75 × 38 × 50 mm
Operating/Storage temperature	-45 to +80 °C
Operating/Storage humidity	max.95 %RH (non‑condensing)
Protection type	IP20

The NOXT MFR012 mechanical hygrostat is a DIN‑rail mounted humidity switch designed for automatic cabinet humidity management and condensation prevention. It adopts a mechanical sensing structure with an adjustable relative humidity setting range from 40%RH to 90%RH, reliably activating cabinet heaters or cooling fans to stabilize internal humidity and avoid moisture damage to electrical components.

Built with a flame‑retardant PC housing, the MFR012 features high switching capacity, long service life up to over 50,000 switching cycles and IP20 protection class. SPDT change‑over contact enables two‑way control: switching on heaters for dehumidification or starting filter fans for ventilation. Simple 35 mm DIN rail clip‑on installation and clear wiring terminals save on‑site assembly time.