http://www.bircheramerica.com/industrial-door/sensing-edges.htm

Safety edges

Airwave Switches Using time proven, traditional technology, airwave pressure switches and airwave sensing edges provide entrapment protection for public transit and industrial overhead door applications.

A Canadian Overhead Door Company Servicing all Ontario Canada

garage doors, Toronto Ontario, commercial fire doors, commercial garage doors, commercial operators, commercial rolling doors, commercial sectional doors, commercial traffic doors, custom garage doors, garage door dealer, garage door installation, garage door manufacturer, garage door openers, garage door operators, garage door parts, garage door repair, garage doors, overhead doors, residential garage doors, residential openers, residential sectional doors, rolling doors, fire doors, coiling doors

Accurate Overhead Limited