Oregon Revised Statutes Property Rights and Transactions § 105.836

(a) Detects carbon monoxide;

(b) Produces a distinctive audible alert when carbon monoxide is detected;

(c) Conforms to State Fire Marshal rules;

(d) Is listed by Underwriters Laboratories or any other nationally recognized testing laboratory or an equivalent organization; and

(e) Operates as a distinct unit or as two or more single station units wired to operate in conjunction with each other.

(a) A heater, fireplace, appliance or cooking source that uses coal, kerosene, petroleum products, wood or other fuels that emit carbon monoxide as a by-product of combustion; or

(b) An attached garage with an opening that communicates directly with a living space.