Standard 639, Edition 8
UL 639

Standard for Intrusion-Detection Units

UL CSDS Proposal Edition 8 Published Date: November 11, 2016 Last Revision: June 18, 2024

Summary of Topics b0639_8_20161111_sum.html

Subject 639

Bulletin Dated: November 11, 2016

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: Provisions for an alternative Corrosion Test

2. For Preliminary Review Only: Revision of Corrosion Test to keep chambers sealed during testing

3. For Preliminary Review Only: Revision to the Corrosion Test to permit installation of zero voltage "dummy" batteries during test

4. For Preliminary Review Only: Revisions to the Jarring Test

5. For Preliminary Review Only: Clarifications to the Mechanical Strength Tests for Enclosures
Back to Standard 639, Edition 8

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