Edwards (formerly Edwards Systems Technology / EST, now part of Carrier Global) is one of the largest fire alarm manufacturers in the world. Their systems — from the flagship EST3 and EST4 intelligent life safety platforms to the popular iO series and legacy IRC-3 panels — are installed in tens of thousands of commercial and institutional buildings. Finding the right Edwards EST fire alarm replacement parts quickly is critical when a device fails during an inspection or a trouble condition appears on the panel.
Fire Alarm Spare Parts stocks over 2,000 Edwards/EST components, including SIGA-series detectors, Genesis notification appliances, control modules, and replacement boards for virtually every Edwards panel generation.
Edwards / EST Systems We Support
| Panel / System | Protocol | Common Replacement Parts |
|---|---|---|
| EST3 / EST3X | Signature | SIGA detectors, 3-CPU boards, loop controllers, Genesis appliances |
| EST4 | Signature | SIGA-PD/PH/SD sensors, network modules, audio boards |
| iO Series (iO64, iO500) | Signature | SIGA modules, power supplies, annunciators |
| IRC-3 | Signature | Loop cards, CPU boards, SIGA detectors |
| QuickStart (QS1/QS4) | Signature | SIGA sensors, modules, pull stations |
Common Edwards EST Replacement Parts
SIGA-Series Intelligent Detectors
The Edwards SIGA-PD (photoelectric), SIGA-PH (photo/heat), and SIGA-HRD (heat) detectors are the workhorses of modern EST systems. For legacy panels, the SIGA-PS and SIGA-IS sensors remain in high demand. All SIGA detectors use the SIGA-SB4 standard base or SIGA-RB4 relay base.
Browse Edwards SIGA Detectors → | Browse Edwards Detector Bases →
Genesis Notification Appliances
The Edwards Genesis line of horns, strobes, and horn/strobes is one of the most widely installed notification appliance families in the industry. Models like the G1-HDVM (horn/strobe) and G1-HD (horn) are commonly replaced due to age or building renovations. We stock wall and ceiling mount options in both red and white.
Shop Edwards Genesis Appliances →
Addressable Modules
Edwards Signature-series modules include the SIGA-CC1S (single input), SIGA-CC2A (dual input), SIGA-CR (relay), and SIGA-MRM1 (riser monitor). These modules handle everything from elevator recall to duct detector monitoring.
Pull Stations
Edwards pull stations range from the addressable SIGA-278 to conventional models. Dual-action and single-action options are available in multiple colors.
Power Supplies & Replacement Boards
Panel-level components such as the 3-CPU1 processor board, loop controller cards, and network interface modules are critical for EST3 and EST4 systems. We also carry standalone power supplies and battery chargers.
Shop Edwards Power Supplies → | Shop Edwards Boards →
How to Identify Edwards EST Parts
- SIGA Prefix — Most addressable field devices start with “SIGA-” followed by a model code (e.g., SIGA-PD, SIGA-CC1S).
- Genesis Model Numbers — Genesis appliances use a “G” prefix (e.g., G1-HDVM). Check the back plate for the full model.
- Board Part Numbers — EST3/EST4 boards use numeric codes (e.g., 3-CPU1, 3-SSDC1). These are printed on the board edge.
- Cross-Reference — Edwards has undergone several name changes (EST → GE Security → UTC → Carrier). Parts may be labeled under any of these names but remain compatible.
Shop All Edwards EST Fire Alarm Parts →
Why Choose Fire Alarm Spare Parts for Edwards Components?
- 2,000+ Edwards/EST parts in stock
- Coverage for EST3, EST4, iO, IRC-3, and legacy systems
- New and certified refurbished options
- Fast shipping — most orders ship within 1 business day
- 30-day return policy and expert technical support
Need help identifying an Edwards part? Call us at 1-844-839-6844.