SIMPLEX (636-409) Old Style 4603 LCD Annunciator Keypad (Discontinued 10/21/2025)
Upgrade and maintain system performance with the Simplex 636-409, a annunciator/display component engineered for seamless integration and dependable operation across Simplex fire alarm architectures.
- Purpose-built Annunciator/Display Component for Simplex systems
- Note: This item is discontinued; contact us for recommended replacements
- Engineered for reliability and long service life
- Streamlines installation and maintenance
- Backed by industry-leading Simplex quality
- Ideal for commercial, institutional, and industrial facilities
Choose Simplex components to help ensure code compliance, clear communication, and long-term reliability.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
The Simplex 636-409 is an old-style keypad replacement for the Simplex 4603 LCD annunciator panel. Browse our full selection of Simplex LCD Annunciators and Commercial Fire Alarm CPU Replacement Boards, as well as the complete range of Simplex Addressable & Conventional Fire Alarm Parts, at Life Safety Consultants.
Additional information
| Weight | 0.16 lbs |
|---|---|
| Dimensions | 13.5 × 8.5 × 0.23 in |
