Simplex Fire Alarm Replacement Parts — Panels, Detectors, Modules & More

Life Safety Consultants is a leading online source for Simplex fire alarm replacement parts, stocking over 1,000 components for both current and discontinued Simplex systems. Simplex, a Johnson Controls brand, is one of the most widely installed commercial fire alarm systems in the world — and we carry the parts to keep them running.

From 4100U/ES control panel boards and TrueAlarm smoke detectors to TrueAlert notification appliances and addressable modules, our extensive inventory covers the full range of Simplex fire alarm equipment. We also carry hard-to-find parts for legacy systems that other suppliers no longer stock.

What We Carry

  • Control Panels & Circuit Boards — 4100U, 4100ES, 4010, 4020, 4005, 4007 series panels, replacement CPU boards, power distribution boards, NAC boards, motherboards, and harnesses
  • Smoke & Heat Detectors — TrueAlarm photoelectric and multi-sensor analog detectors, heat detectors, duct smoke detectors, and conventional 2-wire/4-wire detectors
  • Notification Appliances — TrueAlert horn/strobes, speakers, visible appliances, LED addressable AV devices (49AV/59AV series), wall and ceiling mount, indoor and outdoor
  • Modules & Interfaces — IDNet and MAPNET II addressable modules, relay modules, monitor modules, fault isolators, NAC extenders, and zone adapters
  • Pull Stations — Addressable and conventional manual pull stations (4099 series), replacement handles, actuators, and keys
  • Annunciators & Displays — Remote annunciators, LCD displays, graphic annunciators, and RUI components
  • Replacement Clocks — Simplex synchronized wall clocks for schools, hospitals, and commercial buildings (6310/2310 series)
  • Power Supplies & Batteries — Panel power supplies, NAC power boosters, battery chargers, and replacement batteries
  • Detector Bases & Accessories — TrueAlarm sensor bases, sounder bases, adapters, lenses, covers, and miscellaneous parts

Why Choose Life Safety Consultants for Simplex Parts?

We’ve been supplying Simplex replacement parts since 2002. Our knowledgeable team understands Simplex systems inside and out — from the latest 4100ES panels to legacy 4020/4120 systems. Whether you need a single circuit board or a bulk order of detectors, we offer competitive pricing, fast shipping, and expert support on every order.

Can’t find the part you need? Contact us — if it’s a Simplex part, we likely have it in stock or can source it.

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