NAICS Code Description

561621 - Security Systems Services (except Locksmiths)

*Click to View Top Businesses by Revenue for 561621 – Complete Profiles*.

This U.S. industry comprises establishments primarily engaged in (1) selling security alarm systems, such as burglar and fire alarms, along with installation, repair, or monitoring services or (2) remote monitoring of electronic security alarm systems.

Cross-References. Establishments primarily engaged in--

  • Selling security alarm systems for buildings, without installation, repair, or monitoring services--are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade; and
  • Retailing motor vehicle security systems, with or without installation or repair services--are classified in Industry 441310, Automotive Parts and Accessories Stores.
2007
NAICS		2012
NAICS		2017
NAICS		Index Entries for 561621
561621561621561621Alarm system monitoring services
561621561621561621Alarm systems sales combined with installation, repair, or monitoring services
561621561621561621Burglar alarm monitoring services
561621561621561621Burglar alarm sales combined with installation, repair, or monitoring services
561621561621561621Fire alarm monitoring services
561621561621561621Fire alarm sales combined with installation, repair, or monitoring services
561621561621561621Security alarm systems sales combined with installation, repair, or monitoring services
561621561621561621Security system monitoring services

Top Businesses by Annual Sales for 561621 – Click for Complete Profiles:

ADT IncBoca RatonFL
ADT LLCBoca RatonFL
Apx Group Holdings IncProvoUT
Convergint Technologies LLCSchaumburgIL
Monitronics International IncDallasTX
Lifelock IncTempeAZ
Sensormatic Electronics LLCBoca RatonFL
Stanley Convrgent SEC Sol IncFishersIN
Vector Security IncWarrendalePA
Defenders IncIndianapolisIN
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