Glossary
Security systems glossary.
Plain-language definitions of the access control, intercom, camera, and door hardware terms that come up in proposals and site walks.
In this collection.
Plain-language definitions of access control, intercom, camera, and door hardware terms used in Bay Area property projects.
Field guide
Wiegand
What it means when access control readers are Wiegand: how the wiring works, what the 26-bit card format is, what it means for security, how it compares with OSDP, and when it is worth changing.
↗Field guideOSDP
What it means when access control readers are OSDP: what the standard changes compared with Wiegand, what Secure Channel is, what it needs, and what to ask the installer.
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