What is the UL standard for connectors and switches?

The UL standard relevant for connectors and switches is indeed UL 634. This standard pertains to the safety and performance requirements for electronic and electrical connectors, particularly in systems involving security and alarm applications. Compliance with UL 634 ensures that the connectors and switches used in alarm systems are reliable, durable, and safe for their intended use, thus promoting a high standard of security for end users.

While other UL standards exist, they focus on different aspects of electrical systems or components. For instance, UL 639 specifically deals with intrusion detection systems, UL 620 pertains to connectors and terminals for general use, and UL 645 relates to standards for fire protective signaling systems. However, UL 634 is specifically established for connectors and switches, making it the correct reference in this context.