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UL Standards Update: January 1-15

Underwriters Laboratories has announced the availability of the following standards, revisions and bulletins.  For additional information regarding the standards listed below, please visit their website at www.ul.com.

Revisions:

UL 429 – Standard for Electrically Operated Valves
Revision dated January 6, 2010

UL 609 – Standard for Local Burglar Alarm Units and Systems
Revision dated January 6, 2010

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A Dash of Maxwell’s: A Maxwell’s Equations Primer – Part Two

Maxwell’s Equations are eloquently simple yet excruciatingly complex. Their first statement by James Clerk Maxwell in 1864 heralded the beginning of the age of radio and, one could argue, the age of modern electronics.

UL 636 – Standard for Holdup Alarm Units and Systems
Revision dated January 6, 2010

UL 639 – Standard for Intrusion-Detection Units
Revision dated January 11, 2010

UL 745-2-3 – Particular Requirements for Grinders, Polishers and Disk-Type Sanders
Revision dated January 13, 2010

UL 745-2-30 – Particular Requirements for Staplers
Revision dated January 13, 2010

UL 873 – Standard for Temperature-Indicating and -Regulating Equipment
Revision dated January 6, 2010

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UL1023 – Standard for Household Burglar-Alarm System Units
Revision dated January 11, 2010

UL 1037 – Standard for Antitheft Alarms and Devices
Revision dated December 31, 2009

UL 1236 – Standard for Battery Chargers for Charging Engine-Starter Batteries
Revision dated January 14, 2010

UL 1598 – Luminaires
Revision dated January 11, 2010

UL 1610- Standard for Central-Station Burglar-Alarm Units
Revision dated January 11, 2010

UL 1635 – Standard for Digital Alarm Communicator System Units
Revision dated January 5, 2010

UL 2388 – Standard for Flexible Lighting Products
Revision dated January 11, 2010

UL 60745-1 – Hand-Held Motor-Operated Electric Tools – Safety – Part 1: General Requirements
Revision dated January 13, 2010

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