Deaf and Hard of Hearing Services (DHHS)
Offers a variety of services and information resources for persons with a hearing disability in Calgary, Alberta. Online store for purchasing hearing devices, listening aids, and warning devices online.
http://www.dhhs.org/

Patlite Corporation
Manufactures and develops visual and audible warning devices, markets signal and alarm products.
http://www.patlite.com/

Wikipedia: Miranda Warning
Provides encyclopedic background information and common misconceptions regarding this device for warning people that they do not have to incriminate themselves.
http://en.wikipedia.org/wiki/Miranda_Warning

Boddingtons Ltd
Boddingtons manufacture extruded plastic mesh & nets, barrier tapes, underground warning tapes, detectable tapes, grass protection mesh, turf reinforcement mesh & barrier fencing mesh
http://www.boddingtons-ltd.com/

Federal Signal Corporation
The FedSig Emergency Products Division is the leading supplier of audible and visual warning devices for vehicles. It serves the police, fire, ambulance, tow, and work vehicle markets.
http://www.fedsig.com/

P. Berghaus GmbH
Willkommen bei der Peter Berghaus GmbH. Wir sind Ihr kompetenter Ansprechpartner für Signalbau, Signalanlagen, Ampelanlagen, Stahlschutzwände, Baustellenabsicherung, Lauflichtanlagen, Verkehrsabsicherung, Schilder, Lichtzeichenanlagen, Signal-Leuchten, Signal-Lampen, Pylone, Kegel, Leitkegel, LZA, Lichtsignalanlagen, Warntafeln, Absperrtafeln, Leitwände, Rundumleuchten, Rundumkennleuchten, Blaulicht, Gelblicht, Verkehrsschilder , Verkehrszeichen, Leuchtpfeile, Baken und Fußplatten
http://www.berghaus-signalbau.de/

Euro Manufacturing And Marketing Limited
Manufacturer of Electronic,Electrical & Mechanical Parts and Accessories for the Automotive Market,M.O.D.,Marine,Agricultural,Emergency Vehicle,P.S.V.,H.G.V.,Trailer,Car and Van markets. sales@eurogroup.gb.com
http://www.eurogroup.gb.com/

Warning Systems (UK) Limited
Warning Systems UK Ltd - The UK Market leader in Public Safety
http://www.warningsystemsgb.co.uk

Whelen Engineering
Design and develop warning and signalling devices. Products include lights and high power voice and siren systems . Product catalogs, technical literature and installation guides available for download .
http://www.whelen.com/

Alert Systems
Flood Warning Homepage, with information on technologies, organizations, and vendors
http://www.alertsystems.org/