Horton Automatics www.hortondoors.com	record USA www.record-usa.com
Stanley Access Technologies www.stanleyaccesstechnologies.com	MS Sedco Door control switches and sensors. www.mssedco.com
BEA manufactures door control switches and sensors. www.beainc.com	Optex manufactures door control switches and sensors. www.optexamerica.com
American Association of Automatic Door Manufacturers www.aaadm.com