Limit Switch, Normally Open - Close On Rise, (160F) - 3/4" Diameter, Two Terminal - 1/4" disconnect terminals -25 @ 240V, 12.5 @ 277V, 12.5 @ 480V. For use on gas/electric furnaces. appliances, ect, U.L.Rated, Part#L160-4OD. Automatic reset. These limit switches are brand new and made by Napco Corp. Made in the USA