Water pressure switch assembly for the following Hayward Heaters: H-Series Induced Draft Low Nox Induced Draft Electronic ED2 Style Millivolt/Electronic ED1 Style Heaters H250IDL2, H350IDL2, H400IDL2 Pool and Spa/Hot Tub Heaters H150, H200, H210, H250, H300, H350, H400 Millivolt/Electronic Ignition Pool and Spa/Hot Tub
