security systems burglar alarm video surveillance medical monitoring security guards armored security fire alarms founded 1930 headquarters southfield michigan u.s. key people milton pierce founder website http www.guardianalarm.com guardian alarm a division of guardian security services is one of the largest independently owned security companies in north america . contents 1 company overview 2 company history 3 see also 4 references 5 external links company overview edit guardian alarm installs monitors and services commercial and residential security systems including fire and burglar alarms cctv and access control and remote interactive video audio monitoring . guardian alarm has two security subsidiaries guardian medical monitoring and guardian guard services . guardian alarm is headquartered in southfield mi and is one of the largest security company in north america and generates over 80 million in revenue from over 80 000 customers . guardian alarm has over 2 000 employees in offices in six different u.s. cities . company history edit in the 1920s guardian alarm founder milton pierce designed and installed his first burglar alarm in his father s detroit tailor shop and then went on to work for a local alarm company . milton quickly went into business for himself when in 1930 he purchased guardian alarm then a fledgling company with only 60 customers . milton s two sons douglas and richard who each went on to start their own alarm companies automatic alarm and certified alarm respectively merged both of their companies with guardian alarm in 1975 . guardian has continued to expand their customer base largely through purchasing smaller alarm and security companies . after an acquisition of an alarm company that also had a security guard division guardian alarm launched guardian guard services in 1970 . guardian guard provides both union and non union security guards for facilities and special events including super bowl xl at ford field in detroit mi . in 1980 guardian alarm expanded into the cash handling business with the formation of guardian armored security which grew into michigan s largest armored car company with nearly 200 employees and annual revenue of almost 10 million . guardian alarm sold guardian armored security to loomis in 2007 . the sale included guardian armored s three michigan locations including flint grand rapids and highland park . guardian medical monitoring was formed in 1999 after ceo douglas pierce was asked by a friend to create a device for senior citizens who live alone that would allow them to summon emergency help . a medical alarm was developed and patented along with several other related accessories and products . guardian medical monitoring is guardian s fastest growing division and was achieved primarily through partnerships with local hospitals home healthcare providers and government health agencies . see also edit burglar alarm fire alarm system medical alarm access control closed circuit television security guards references edit this article needs additional citations for verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . february 2008 learn how and when to remove this template message top rmr aes intellinet wins contract monitoring the new wave top 100 security companies 2 home health monitoring companies expand to meet needs of baby boomers guardian alarm sells division external links edit guardian alarm homepage guardian medical monitoring homepage guardian guard services homepage guardian alarm s facebook page guardian alarm s twitter page guardian alarm s linkedin page guardian alarm s youtube channel guardian alarm s blog retrieved from https en.wikipedia.org w index.php title guardian alarm & oldid 647238563 categories security companiesmedical monitoringhidden categories articles needing additional references from february 2008all articles needing additional references navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 15 february 2015 at 12 36 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view