Home > Notifier > SIMPLEX 556-681 FIRE ALARM TROUBLE NOTIFIER CARD SIMPLEX 2001 ...
Verified: May 26, 2026
SIMPLEX 556-681 FIRE ALARM TROUBLE NOTIFIER CARD SIMPLEX 2001 556-638
~$69.95
The Simplex 556-681 is a trouble notifier card designed for use with Simplex 2001 panels to indicate system faults or issues.
Key Specifications
- Compatibility: Simplex 2001 panels
- Voltage: 24 VDC
- Type: Trouble Notifier Card
- Mounting: Compatible with Simplex 2001 panel enclosure
- Dimensions: Standard card size
- Indicators: LED indicators for different types of troubles
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