Editorial Review Surge protector for Units and Circuit Boards
Features 1) Plug-In Transient, Surge, Lightning, & Spike Protection for 120-240 Volt Condensing Units and Furnaces. 2) (Full instructions with photos in package.) 3) "The most common cause ofCircuit Board componentfailure is damage as a result of poorly conditioned voltage." 4) This unit works with either 120v or 240v.