The Clarity Blog

Which UL Line Security Option is Right for Your Business?


UL Line Security for Your Business

All jewelers today accept the fact they need line security to maintain the integrity of their burglar alarm communication path between their protected property and their alarm service company’s monitoring facility.

Four different line security communication options are available from Underwriters Laboratories (UL)  ranging in initial cost of equipment and maintenance.

Single Path Line Security

Allows for system check-in once every 200 seconds.


  • Can minimize alarm communication costs


  • More susceptible to network interruptions
  • Network interruptions can result in more false alarm fees

Dual Path Line Security

Allows for system check-in on the primary path once every 360 seconds; check-in on the secondary path is only once every 24 hours.


  • In the event of a communication failure (when system is unarmed) on the primary path the signal is sent on the secondary path
  • May decrease the incidence of a false alarm
  • Bandwidth sensitive communication costs are less


  • Initial installation costs for two communication paths
  • In absence of primary path, system would communicate via secondary path in a non-line security mode until the primary path is restored

Alternate Primary Path Line Security

Allows for system check-in every 200 seconds on both paths.


  • Provides two paths of secure communication
  • Greatly reduces the incidence of a false alarm
  • Continues secured line communication even if the alternate path is interrupted


  • Initial equipment costs
  • Check-in related costs

Alternate Primary with Dual Signal Path

Allows for system check-in on both paths every 360 seconds; check-in on the third path is only once every 24 hours.


  • Highest level of resiliency described in UL Standards
  • Addition of third path reduces check-in frequency on both paths from 200 seconds to 360 seconds


  • Equipment cost
  • Telecommunication costs for three paths

Want to learn more?

Read more about the difference between line supervision and line security.


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About Jewelers Mutual Group

Jewelers Mutual was founded in 1913 by a group of Wisconsin jewelers to meet their unique insurance needs. Later, consumers began putting their trust in Jewelers Mutual to protect their jewelry and the special memories each piece holds. Today, Jewelers Mutual continues to support and move the industry forward by listening to jewelers and consumers and offering products and services to meet their evolving needs. Beyond insurance, Jewelers Mutual’s powerful suite of innovative solutions and digital technology offerings help jewelers strengthen and grow their businesses, mitigate risk, and bring them closer to their customers. The Group insurers’ strong financial position is reflected in their 37 consecutive “A+ Superior” ratings from AM Best Company, as of November 2023. Policyholders of the Group insurers are members of Jewelers Mutual Holding Company. Jewelers Mutual is headquartered in Neenah, Wisconsin, with other Group offices in Dallas, Texas and Miami, Florida. To learn more, visit