Technical guides, comparison articles and sourcing advice from certified fire alarm technicians.
Everything you need to know about Notifier fire alarm parts — detectors, modules, annunciators and where to find them. Updated sourcing guide.
Read Technical Guide →Deep dive into the Notifier LEM-320 local energy module — technical specs, compatible panels, wiring tips and current eBay pricing.
Read Technical Guide →Complete reference for Siemens fire alarm parts including detectors, strobe lights and control modules. Find compatible replacement parts.
Read Technical Guide →Side-by-side comparison of the FST-851R and FSD-751RP duct smoke detectors — specs, installation differences, and which fits your system.
Read Technical Guide →Full guide to the Silent Knight 5820XL series — power supply specs, compatible replacement parts for commercial fire alarm systems.
Read Technical Guide →Technical guide to System Sensor notification appliances — SPSRK, SPSWLED, SPCWL and more. Specs, candela ratings and wiring.
Read Technical Guide →Everything about Simplex 4090-9008, 4090-9118, 4603-9101 and ZAM modules — functions, wiring, compatible panels and sourcing.
Read Technical Guide →Comprehensive guide to Fire-Lite fire alarm system parts — compatible detectors, addressable modules, C304 and other popular components.
Read Technical Guide →Complete reference guide for Edwards EST fire alarm parts — G1M-RM, SIGA-CT2, SIGA-IS, Genesis strobes and compatible replacement components.
Read Technical Guide →Technical guide to Kidde fire suppression replacement parts — sprinkler heads, valve trim, agent release modules and compatible control accessories.
Read Technical Guide →Full sourcing guide for Gamewell-FCI fire alarm parts — E3 Series modules, HARSH detectors, 7100 panels and compatible replacement components.
Read Technical Guide →Technical overview of Potter fire alarm modules — PFC-6006, PFC-4410 series, zone modules and compatible accessories for commercial installations.
Read Technical Guide →Complete guide to Mircom fire alarm replacement parts — FA-1000 series, FX-2000, LCM modules, annunciators and addressable detectors.
Read Technical Guide →Side-by-side comparison of the Notifier NFS2-3030 and NFS-320 fire alarm control panels — loop capacity, module compatibility and upgrade paths.
Read Technical Guide →In-depth technical comparison of addressable and conventional fire alarm detectors — wiring classes, panel compatibility, CLIP vs IDNET protocols.
Read Technical Guide →Complete guide to fire alarm pull station replacement — single-action vs dual-action, addressable vs conventional, wiring diagrams and part numbers.
Read Technical Guide →Expert checklist of fire alarm control panel spare parts every technician should carry — modules, detectors, power supplies and notification appliances.
Read Technical Guide →Technical comparison of System Sensor and Gentex strobe lights — candela ratings, UL 1971 compliance, ADA requirements and field performance.
Read Technical Guide →How to select and replace a fire alarm power supply — voltage ratings, battery backup, UL 864 compliance, and compatible brands including Silent Knight and Notifier.
Read Technical Guide →Full parts reference for the Simplex 4010ES and 4100U fire alarm panels — SIM cards, IDC modules, TrueAlarm detectors and compatible accessories.
Read Technical Guide →Technical sourcing guide for Siemens XLS and MXL fire alarm panel parts — ASM modules, power supplies, CLIP loop cards and compatible detectors.
Read Technical Guide →Complete guide to duct smoke detector installation — NFPA 90A requirements, sampling tube sizing, FST-851 vs FSD-751RP selection and AHJ considerations.
Read Technical Guide →Deep dive into the Notifier FCPS-24S6 booster power supply — output specs, NAC circuit wiring, compatible NFS panels and common field issues.
Read Technical Guide →Technical guide to fire alarm relay modules — NRAM, FRM-1, ZAM and addressable relay types. Wiring, form-C contacts, elevator recall and HVAC shutdown applications.
Read Technical Guide →Complete parts reference for Silent Knight 5208 and 6820 series fire alarm panels — zone modules, annunciators, power boosters and compatible replacement parts.
Read Technical Guide →Technical guide to fire alarm annunciators — LCD vs LED display types, remote annunciator wiring, Notifier ACM-8RF, Simplex 4606 and compatible panel requirements.
Read Technical Guide →Complete sourcing guide for Hochiki fire alarm parts — DCP addressable detectors, CHD conventional heads, SCI modules and compatible replacement components.
Read Technical Guide →Technical guide to Bosch fire alarm replacement parts — DS150i detectors, D4020 control panels, D9127T keypads and compatible modules for commercial systems.
Read Technical Guide →Side-by-side comparison of the Notifier FSP-851 photoelectric and FST-851 thermal detectors — sensitivity, placement rules, panel compatibility and which to choose.
Read Technical Guide →In-depth guide to fire alarm heat detector types — rate-of-rise, fixed-temperature, and combination models. Learn NFPA 72 placement rules and find compatible replacement parts.
Read Technical Guide →Complete guide to fire alarm panel battery replacement — 12V vs 24V sealed lead-acid, amp-hour sizing, UL 864 standby requirements and compatible batteries for major brands.
Read Technical Guide →Deep-dive into Edwards EST SIGA addressable modules — SIGA-IS input, SIGA-CT2 combo, SIGA-CC1 relay, SIGA-MCC2 and compatible EST3/iO series panel applications.
Read Technical Guide →Full reference guide for Cooper Wheelock notification appliances — MT horn-strobes, E70 series, SpectrAlert Advance candela ratings, UL 1971 compliance and wiring.
Read Technical Guide →Practical NFPA 72 inspection checklist for fire alarm technicians — devices to test, common failures, replacement part numbers and AHJ documentation requirements.
Read Technical Guide →Technical comparison of Class A and Class B fire alarm wiring — SLC loop supervision, trouble isolation, NFPA 72 Style 4/6/7, and which configuration your system requires.
Read Technical Guide →Complete technical reference for Simplex 4098 TrueAlarm detectors — photoelectric, thermal, and multi-criteria heads, compatible bases, and replacement part numbers for 4010 and 4100 panels.
Read Technical Guide →Practical guide to fire alarm FACP trouble codes — ground fault, open loop, low battery, device missing and communication failures. Covers Notifier, Simplex, Siemens and Silent Knight.
Read Technical Guide →Complete guide to addressable fire alarm I/O modules — monitor modules, control modules, relay modules and dual-input types. Covers SLC wiring, HVAC shutdown, elevator recall and door holder applications.
Read Technical Guide →Expert guide to sourcing used and refurbished fire alarm parts on eBay — what to inspect, listing red flags, firmware versions, testing tips and which parts are safe to buy secondhand.
Read Technical Guide →Technical deep-dive into the Notifier NRZZM addressable releasing module — output specs, compatible NFS panels, agent release wiring, pre-discharge timing and field installation notes.
Read Technical Guide →Technical replacement guide for Siemens fire alarm detectors — HFP-11 multi-criteria, DB-11 photoelectric, OP-121 optical heads, compatible bases and MXL/DESIGO panel compatibility.
Read Technical Guide →Complete replacement guide for Edwards EST smoke detectors — SIGA-PS photoelectric, SIGA-PHS multi-criteria, SIGA-HRS heat, compatible bases and EST3/iO panel compatibility.
Read Technical Guide →How to decode System Sensor SpectrAlert Advance horn-strobe part numbers — P2RK, P2GRKLED, PC2WLED, SPSCWLED, SRK-AB and SPSRLED. Color, mount, candela and wiring explained.
Read Technical Guide →Technical deep-dive into the Edwards ECC-50/100 emergency voice evacuation command center — amplifier ratings, message channels, NAC wiring, compatible panels and field setup notes.
Read Technical Guide →Complete guide to the Potter OSYSU-2 outside-screw-and-yoke supervisory (tamper) switch — contact ratings, wiring, adjustment, compatible valves and NFPA 72 monitoring requirements.
Read Technical Guide →Guide to Edwards EST SIGA-270 addressable and BNG-1RS conventional manual pull stations — single vs dual action, STI accidental-protection covers, wiring and panel compatibility.
Read Technical Guide →Technical guide to the Honeywell HW-AV-LTE-M-2 AlarmNet LTE-M fire alarm communicator — POTS line replacement, AHJ acceptance, supervision intervals, wiring and panel compatibility.
Read Technical Guide →Complete reference for Edwards EST notification appliances — Genesis horn-strobes, 541-series signals, fire bells and candela settings. UL 1971 compliance, color codes and wiring.
Read Technical Guide →Technical guide to Mircom fire alarm power supplies and the MIX-M500S addressable monitor module — output ratings, battery sizing, SLC wiring and FX-2000/FleX-Net panel compatibility.
Read Technical Guide →Deep-dive into the Notifier AOM-2RF addressable audio output module — output ratings, message routing, compatible NFS panels and amplifier wiring for voice evacuation systems.
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