Standard 639, Edition 8
UL 639

Standard for Intrusion-Detection Units

UL CSDS Proposal Edition 8 Published Date: October 25, 2010 Last Revision: June 18, 2024

Summary of Topics b0639_8_20101025_sum.html

Subject 639

Bulletin Dated: October 25, 2010

SUMMARY OF TOPICS

The following changes in requirements to the Standard for Intrusion-Detection Units, UL 639, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Removing range verification as passing criteria for beam detectors

2. For Preliminary Review Only: Revisions to the Induced Interference and Sensitivity Test
Back to Standard 639, Edition 8

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