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Much of what we hold is discontinued or superseded Simplex stock kept specifically for existing installations.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 4190-9829 Modular Network Interface Card, TrueSite Workstation
Sale price$1,420.10
Regular price$1,704.12
In Stock
Simplex
Simplex 4100-3207 Quad IDNet Isolator Module
Sale price$301.45
Regular price$361.74
Not in stock - available on backorder - lead time on request
Simplex
Simplex 4098-9020 Reflective Auto Align Beam Smoke Detector
Sale price$1,182.55
Regular price$1,419.06
In Stock
Simplex
Simplex 4190-9852 Right Port Single-Mode 4120 Duplex Fiber Media Card
Sale price$458.40
Regular price$550.08
In Stock
Simplex
Simplex 566-826 4020 Network Interface Assembly
Sale price$744.65
Regular price$893.58
Only 2 units left
Simplex
Simplex 4009-9810 Fiber Optic Receiver, Class B
Sale price$375.30
Regular price$450.36
Not in stock - available on backorder - lead time on request
Simplex
Simplex 49VO-APPLC-BA TrueAlert ES Addressable Strobe
Sale price$134.20
Regular price$161.04
Not in stock - available on backorder - lead time on request
Simplex
Simplex 4906-9117 TrueAlert Multi-Candela Strobe
Sale price$99.50
Regular price$119.40
In Stock
Simplex
Simplex 59VO-APPLWR TrueAlert ES LED Addressable Strobe
Sale price$84.30
Regular price$101.16
In Stock
Simplex
Simplex 4906-9141 TrueAlert Multi-Candela Horn Strobe
Sale price$86.30
Regular price$103.56
In Stock
Simplex
Simplex 743-2265 CPU Motherboard
Sale price$294.05
Regular price$352.86
Not in stock - available on backorder - lead time on request
Simplex
Simplex 566-736 4100 Mapnet Transceiver Board
Sale price$407.20
Regular price$488.64
Contact Us for Alternatives
Simplex
Simplex 566-246 4100U/ES PDM Board
Sale price$79.70
Regular price$95.64
Not in stock - available on backorder - lead time on request
Simplex
Simplex 49MTV-WWF MTV, Wall White Fire
Sale price$121.65
Regular price$145.98
Not in stock - available on backorder - lead time on request
Simplex
Simplex 4906-9207 TrueAlert Multi-Candela Strobe
Sale price$73.10
Regular price$87.72
In Stock
Simplex
Simplex 4904-9176 Wall Mount Strobe, 15 cd, Red with White FIRE Lettering, Vertical Mount
Sale price$84.20
Regular price$101.04
Contact Us for Alternatives
Simplex
Simplex 4606-9202 4007ES/4017ES Color LCD Annunciator, Red
Sale price$497.40
Regular price$596.88
In Stock
Simplex
Simplex 4100-5325 EPS Power Supply 120V
Sale price$1,258.30
Regular price$1,509.96
Contact Us for Alternatives
Simplex
Simplex 4100-5125 Remote Power Supply RPS, 9 A with Battery Charger, Three Class A/B NACs, 120 VAC
Sale price$932.60
Regular price$1,119.12
Contact Us for Alternatives
Simplex
Simplex 4100-5113 SPS System Power Supply, 9 Amp, 3 NACs, 250-Point IDNet, 220-240 VAC
Sale price$1,307.90
Regular price$1,569.48
Contact Us for Alternatives



