Key Specifications

Parameter	Specification
Switching difference (temperature)	2 K (±1 K tolerance) at +25 °C (+77 °F), 50 %RH
Switching difference (humidity)	4 %RH (±1 % tolerance) at +25 °C (+77 °F), 50 %RH
Reaction time (humidity)	approx. 5 sec.
Contact type	change-over contact (relay)
Service life	> 30,000 cycles
Max. switching capacity (relay output)	10 A resistive / 1.6 A inductive @ AC 240 V; 0.6 A @ DC 60 V
Max. inrush current	AC 30 A for 10 sec.
Housing	PC
Mounting	clip for 35 mm DIN rail
Operating/Storage temperature	-40 to +140 °F (-40 to +60 °C)
Operating/Storage humidity	max. 90 %RH (non-condensing)
Dimensions	85 x 60 x 40 mm
Weight	approx. 3.5 oz. (100 g)
Protection type	IP20

ETF012 Electronic Hygrotherm is a DIN‑rail mount combined temperature & humidity controller designed for electrical enclosures. It continuously detects ambient temperature and relative humidity inside cabinets, automatically activating heaters or fans once values exceed preset thresholds to prevent condensation and overheating.

Built with UL94‑0 flame‑retardant plastic housing, SPDT contact and long service life over 50,000 cycles, it features wide voltage compatibility and stable performance even at -40℃ low temperature. Certified with CE & RoHS, it perfectly matches cabinet heaters and cooling fans for reliable enclosure climate management.