Siemens (PAD-3) Notification Appliance Extender 599-699189



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Notification appliance circuit expander with a built-in auxiliary power output.

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Siemens Notification Appliance Extender PAD-3   (599-699189)

The Siemens PAD-3 is a notification appliance circuit expander with a built-in auxiliary power output.  It is designed for use with Siemens Building Technologies, Fire Safety Division fire alarm control panels.  This power source is designed to provide the extra power required in buildings conforming to the Americans with Disabilities Act.

The Siemens PAD-3 provides 6 amps of 24 VDC power for multiple uses.  All 6 amps can be directed to 4 Notification Appliance Circuits (NAC s).  Each is rated at 3 amps and is power limited.  Either 1 or 2 inputs can control the four outputs.  These outputs are compatible with all Fire Safety 24 VDC notification appliances.  The PAD-3 can be configured so that the inputs can be programmed as steady outputs, ANSI temporal outputs, or synchronized strobe outputs.  It can also be programmed so that one input will silence U-MHU Series horn/strobe horns while the strobes remain on using one set of wires.

If you have any questions about this Siemens Notification Appliance Extender, contact the Life Safety Consultants team at (888) 557-0558 or email us at 

Additional information

Weight10 lbs
Dimensions12 × 14 × 6 in


Part Type

Appliance Extender, Power Extender Panel, Power Supply


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