System Sensor products
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Add to Cart The item has been addedSystem Sensor P4RK-R Horn Strobe Red - Red
4-wire wall-mount horn strobe in red for fire alarm systems
- 4-wire architecture supports supervised wiring with pre-install continuity check via shorting spring.
- Operates across –40°F to 151°F, suiting demanding indoor environments year-round.
- Field-selectable strobe candela and single-unit horn/strobe design reduce back-box count and labor.
Usually Ships in 2-3 Weeks Free shipping over $499$161.00 $94.99 Save $66.01 -
Save $9.94
Add to Cart The item has been addedSystem Sensor LENS-RC Red Lens for SpectrAlert Advance Ceiling
Red lens replacement for SpectrAlert Advance ceiling strobes
- UL 1638 listed for reliable red visual signaling on SpectrAlert Advance ceiling strobes.
- NEMA 3R rated for indoor and outdoor use across a −35°F to 151°F temperature range.
- Tool-free snap-on installation onto the SpectrAlert Advance universal mounting plate.
Usually Ships in 2-3 Weeks Free shipping over $499$29.93 $19.99 Save $9.94 -
Save $9.94
Add to Cart The item has been addedSystem Sensor LENS-GC Green Lens - Ceiling
Green lens replacement for SpectrAlert Advance ceiling beacons
- UL 1638-listed green lens signals normal status in color-coded notification systems.
- Rated for −35°F to 151°F operation, supporting indoor and outdoor deployments.
- Tool-free clip installation into SpectrAlert Advance ceiling strobes; no rewiring needed.
Usually Ships in 2-3 Weeks Free shipping over $499$29.93 $19.99 Save $9.94 -
Save $0.94
Add to Cart The item has been addedSystem Sensor LENS-BC Blue Lens Replacement
Blue lens replacement for SpectrAlert Advance ceiling units, 35VDC
- Direct drop-in replacement for SpectrAlert Advance ceiling units—no rewiring required.
- Operates on the existing 35VDC power rail, eliminating additional power supply runs.
- TCP/IP integration enables centralized monitoring and synchronized activation across units.
Usually Ships in 2-3 Weeks Free shipping over $499$29.93 $28.99 Save $0.94 -
Save $11.29
Add to Cart The item has been addedSystem Sensor LENS-AC Amber Lens - Ceiling
Amber lens assembly for SpectrAlert Advance ceiling-mount fire alarms
- Attaches to SpectrAlert Advance ceiling-mount strobes without tools or rewiring.
- Amber color enables zone differentiation for gas, weather, or sprinkler alarms.
- Operates from −35°F to 151°F, supporting indoor and outdoor deployments.
Usually Ships in 2-3 Weeks Free shipping over $499$31.28 $19.99 Save $11.29 -
Save $4.49
Add to Cart The item has been addedSystem Sensor ETX InnovairFlex Exhaust Tube 12-Inch
12-inch flexible exhaust tube for System Sensor ETX air sampling
- Flexible 12-inch tube routes exhaust air where rigid piping is impractical.
- Rated for –4°F to 158°F and 0–95% RH, supporting harsh HVAC environments.
- Mounts to ¾-inch conduit knockout on InnovairFlex D4120 housings, no tools needed.
Usually Ships in 2-3 Weeks Free shipping over $499$14.48 $9.99 Save $4.49 -
Save $8.03
Add to Cart The item has been addedSystem Sensor EOLR-1 End-of-Line Power Supervision Relay
End-of-line relay detects open/short circuits in fire alarm branches
- Detects open and short circuits at branch termination, reporting faults to the panel instantly.
- Monitors power continuity on supervised branches to flag voltage loss before detectors are affected.
- Compatible with conventional and hybrid addressable/conventional architectures for flexible deployment.
Usually Ships in 2-3 Weeks Free shipping over $499$38.02 $29.99 Save $8.03 -
Save $10.64
Add to Cart The item has been addedSystem Sensor DST5 InnovairFlex Sampling Tube - 4 to 8 Foot
4-to-8-foot duct sampling tube for networked HVAC fire detection
- Adjusts from 4 to 8 feet to cover variable duct widths without replacing hardware.
- Tool-free snap-in mount to D4120 housing cuts installation time in tight duct access.
- Supports air velocities from 100–4,000 FPM across –4°F to 158°F operating range.
Usually Ships in 2-3 Weeks Free shipping over $499$35.63 $24.99 Save $10.64 -
Save $8.53
Add to Cart The item has been addedSystem Sensor DST3 Duct - 2 to 4 Foot
Duct sampling tube for 2–4 ft runs, TCP/IP integrated, 29VDC
- Covers 2–4 ft duct runs at 29VDC, eliminating extra detector heads per zone.
- Supports air velocities 100–4,000 ft/min, matching standard commercial HVAC ranges.
- Tool-free front or back install via ¾-in conduit knockout cuts deployment time.
Usually Ships in 2-3 Weeks Free shipping over $499$29.52 $20.99 Save $8.53 -
Save $25.40
Add to Cart The item has been addedSystem Sensor DST10 InnovairFlex Sampling Tube - 8 to 12 Foot
Aspirating smoke sampling tube for 8–12 ft ductwork runs with TCP/IP
- Covers 8–12 ft duct spans, fitting medium-run HVAC zones without custom hardware.
- TCP/IP communication integrates directly into networked InnovairFlex detection systems.
- Compact 14.38 × 5 × 2.5 in rectangular form installs in tight ductwork with minimal clearance.
Usually Ships in 2-3 Weeks Free shipping over $499$73.39 $47.99 Save $25.40 -
Save $6.64
Add to Cart The item has been addedSystem Sensor DST1 InnovairFlex Sampling Tube - 1 Foot Duct
Duct sampling tube for InnovairFlex fire detection up to 1 foot
- Samples duct airflow from 100–4,000 FPM, covering low-velocity returns to high-velocity supply runs.
- Tool-free front or rear installation via patented quick-connect; no threaded fittings required.
- Operates at 29VDC and integrates directly into 4-wire photoelectric fire alarm circuits.
Usually Ships in 2-3 Weeks Free shipping over $499$18.63 $11.99 Save $6.64 -
Save $241.97
Add to Cart The item has been addedSystem Sensor DH400OE-1 Outdoor Duct Detector
Sealed outdoor duct detector enclosure for rooftop HVAC smoke detection
- Weatherproof sealed housing blocks rain, snow, dust, and UV for outdoor HVAC installs.
- Compact 14.38 × 5 × 2.5 in footprint fits wall, ceiling, or rack mounting on rooftop ducts.
- Operates at 29 VDC with no gateway hardware needed for standard fire alarm integration.
Usually Ships in 2-3 Weeks Free shipping over $499$645.96 $403.99 Save $241.97 -
Save $0.36
Add to Cart The item has been addedSystem Sensor DECAL-WC White Letter Decal Kit
White letter decal kit for System Sensor red ceiling devices
- Labels red SpectrAlert Advance ceiling strobes and horn-strobes without affecting strobe output.
- Rated for indoor and outdoor use across a wide temperature range of −35°F to 151°F.
- Tool-free application to device lens or trim ring; full adhesion achieved within 24 hours.
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Save $0.24
Add to Cart The item has been addedSystem Sensor DECAL-W White Letter Decal Kit for Red Devices
White letter decals for System Sensor red security devices
- Labels System Sensor red SpectrAlert Advance devices without tools or modifications.
- Adhesive backing works on both indoor and outdoor device surfaces after simple prep.
- Compatible exclusively with System Sensor red device line — verify model before ordering.
Usually Ships in 2-3 Weeks Free shipping over $499$98.23 $97.99 Save $0.24 -
Save $98.34
Add to Cart The item has been addedSystem Sensor D4S 4-Wire Duct Smoke Detector
4-Wire duct smoke detector with TCP/IP network connectivity for HVAC monitoring
- Operates at 29VDC, matching standard fire alarm panel power supplies with no external converter.
- TCP/IP connectivity enables real-time network alerts alongside hardwired 4-wire panel signaling.
- Rated for –20 to 70°C operation, supporting reliable HVAC duct deployment across harsh environments.
Usually Ships in 2-3 Weeks Free shipping over $499$256.33 $157.99 Save $98.34 -
Save $101.11
Add to Cart The item has been addedSystem Sensor D4P120 Duct Detector Power Board Component
TCP/IP duct detector power board, 29VDC output for System Sensor assemblies
- Supplies regulated 29VDC to photoelectric sensor heads in D4120 duct detector assemblies.
- Operates across –4°F to 158°F, supporting installations in harsh mechanical environments.
- ¾-inch conduit knockout and terminal-block wiring simplify 4-wire field connections.
Usually Ships in 2-3 Weeks Free shipping over $499$263.10 $161.99 Save $101.11 -
Save $126.92
Add to Cart The item has been addedSystem Sensor D4240 4-Wire Duct Smoke Detector 120VAC
4-wire duct smoke detector for supply/return air HVAC monitoring
- 4-wire supervised wiring supports alarm, trouble, and reset on conventional or addressable panels.
- Runs on 120VAC, eliminating the need for a separate low-voltage power supply in HVAC installations.
- Compact 14.38" x 5" x 2.5" housing fits standard supply or return air duct cutouts without modification.
Usually Ships in 2-3 Weeks Free shipping over $499$341.91 $214.99 Save $126.92 -
Save $200.47
Add to Cart The item has been addedSystem Sensor D4120W 4-Wire Watertight Duct Smoke Detector
4-wire duct detector with NEMA 4 watertight housing for humid HVAC environments
- NEMA 4 watertight enclosure blocks moisture and dust, preventing false alarms in high-humidity ductwork.
- Separate 4-wire alarm and supervisory circuits let HVAC shutdown logic run independently from audible alarms.
- 29VDC hardwired operation integrates directly into conventional fire alarm panels—no protocol converters needed.
Usually Ships in 2-3 Weeks Free shipping over $499$528.46 $327.99 Save $200.47 -
Save $130.15
Add to Cart The item has been addedSystem Sensor D4120 4-Wire Photoelectric Duct Smoke Detector
4-wire photoelectric duct detector, 24 VDC, direct mount to HVAC
- Photoelectric sensing targets smoldering-fire smoke particles before spread through HVAC zones.
- 4-wire, 24 VDC design integrates with conventional and addressable fire alarm control panels.
- IP66-rated housing mounts directly into standard ductwork at 14.38 × 5 × 2.5 in footprint.
Usually Ships in 2-3 Weeks Free shipping over $499$375.14 $244.99 Save $130.15 -
Save $151.01
Add to Cart The item has been addedSystem Sensor D2 2-Wire Photoelectric Duct Smoke Detector
Photoelectric duct detector, 2-wire conventional, 29VDC for HVAC systems
- Photoelectric sensing reliably detects smoldering fires in HVAC ductwork.
- 2-wire circuit cuts conduit runs—power and signaling share one wire pair.
- 29VDC operation integrates with legacy and modern panels without added modules.
Usually Ships in 2-3 Weeks Free shipping over $499$303.00 $151.99 Save $151.01
