Brand New And Genuine, This Baxi 5137531 Air Pressure Switch (A.P.S.) Fits A Wide Range Of Baxi Boilers In The Uk And Around The World. Some Examples Are As Follows: Baxi Combi 105He, Main 24/30He And More. (This Air Pressure Switch Is The New Up-Graded Version For The Above Baxi Boilers) 1 year guarantee from the date of purchase if the product becomes faulty.