Key Specifications

Item	Specification
Switching difference	7 °F (4 K) ±1.8 °F (1 K) tolerance at +68 °F (+20 °C)
Sensor element	NTC
Reaction time	approx. 5 seconds
Contact type	SPDT / change‑over contact (relay)
Service life	＞50,000 cycles (＞100,000 cycles upgraded version available)
Max. switching capacity (relay output)	8 A resistive /1.6 A inductive @ AC120 V / AC240 V,100 W @ DC24 V
Max. inrush current	AC16 A for 10 sec.
Housing	PC / UL94V‑0 plastic
Mounting	clip for 35 mm DIN rail
Operating/Storage temperature	-40 to +185 °F (-40 to +85 °C)
Operating/Storage humidity	max.90 %RH (non‑condensing)
Dimensions	71 ×42 ×37 mm
Weight	approx.2 oz.(60 g)
Protection type	IP20

The ETR011 is a compact electronic thermostat designed for precise temperature control inside electrical enclosures. It adopts an NTC sensor with small switching hysteresis and LED operating indicator.

Featuring 35 mm DIN rail clip mounting, this thermostat can drive filter fans, enclosure heaters or alarm signal devices, stabilizing cabinet internal temperature and preventing overheating or condensation damage to electrical components.