Simplex, now part of Johnson Controls, is one of the most widely installed fire alarm brands in North America. Simplex systems are found in hospitals, universities, airports, high rises and industrial plants, and they are maintained for decades rather than replaced. That long service life is exactly why the parts are hard to find, and it is what this collection is aimed at.
With well over a thousand Simplex line items in stock, we cover:
- Simplex smoke detectors and sensors - photoelectric, heat, combination photoelectric and heat, and carbon monoxide sensors, plus replacement cartridges
- Sensor bases, including standard, sounder and relay bases
- Duct detectors, duct housings and duct covers
- Addressable modules - individual addressable modules, zone adapter modules, relay modules and NAC extenders
- Single and double action pull stations, break rods and station keys
- Horns, strobes, horn strobes and speaker strobes, wall and ceiling mount
- Device covers, cover plates and trim in red and white
Much of what we hold is discontinued or superseded Simplex stock kept specifically for existing installations. If a part is not listed, send the number through our quote page.

Simplex
Simplex 4010-9401 4010ES Addressable Fire Alarm Control Unit, 250-Point IDNet2, Red, 120 VAC
Sale price$2,325.55
Regular price$2,790.66
In Stock
Simplex
Simplex 49VO-APPLW TrueAlert ES Addressable Strobe
Sale price$49.10
Regular price$58.92
In Stock
Simplex
Simplex 2098-9739 Encapsulated 24 VDC, End-of-Line Relay
Sale price$30.40
Regular price$36.48
In Stock
Simplex
Simplex 4099-9015 Double Action Addressable Manual Release Station, Releasing Applications
Sale price$84.70
Regular price$101.64
Not in stock - available on backorder - lead time on request
Simplex
Simplex 635-946 Mic Assy 4100 Audio
Sale price$253.70
Regular price$304.44
Not in stock - available on backorder - lead time on request
Simplex
Simplex 4903-9358 TrueAlert Non-Addressable Speaker Strobe
Sale price$103.75
Regular price$124.50
Contact Us for Alternatives
Simplex
Simplex 4906-9135 Chime Strobe
Sale price$79.85
Regular price$95.82
Contact Us for Alternatives
Simplex
Simplex 4906-9134 Non-Addressable Chime Strobe
Sale price$108.40
Regular price$130.08
Contact Us for Alternatives
Simplex
Simplex 4906-9208 TrueAlert Multi-Candela Dual-Strobe
Sale price$147.40
Regular price$176.88
In Stock
Simplex
Simplex 49AVC-WRFIRE-O Cover, Weatherproof, Red
Sale price$24.95
Regular price$29.94
In Stock
Simplex
Simplex 59VO-WWF TrueAlert ES LED Addressable Strobe
Sale price$120.80
Regular price$144.96
In Stock
Simplex
Simplex 4905-9940 Adapter Skirt
Sale price$8.35
Regular price$10.02
Not in stock - available on backorder - lead time on request
Simplex
Simplex 734-183 Digital Audio Riser Termination Plug
Sale price$29.30
Regular price$35.16
Not in stock - available on backorder - lead time on request
Simplex
Simplex 49SO-APPLC-BA TrueAlert ES Addressable Speaker Ceiling-Mount
Sale price$213.00
Regular price$255.60
In Stock
Simplex
Simplex 2975-9462 Surface Box Platinum for 4606-9205
Sale price$121.15
Regular price$145.38
In Stock
Simplex
Simplex 4098-5602 Photo and Heat Detector
Sale price$52.95
Regular price$63.54
Not in stock - available on backorder - lead time on request
Simplex
Simplex 49SVH-APPLC-O Speaker Visible High Candela Ceiling Appliance, Weatherproof
Sale price$224.10
Regular price$268.92
In Stock
Simplex
Simplex 49LENS-AMBER TrueAlert ES Amber Lens Cover Kit, Wall Mount Strobe and Horn/Strobe
Sale price$14.05
Regular price$16.86
In Stock
Simplex
Simplex 49MT-WRF TrueAlert Addressable MultiTone Horn
Sale price$58.60
Regular price$70.32
In Stock
Simplex
Simplex 650-442 4010ES Main System Supply with IDNet+ Channel, 8 A Power and Four NACs
Sale price$1,096.80
Regular price$1,316.16
Not in stock - available on backorder - lead time on request
Simplex
Simplex 566-284 4100UES 240 IFC BD
Sale price$192.90
Regular price$231.48
Not in stock - available on backorder - lead time on request


