SL-2000 Photoelectric Duct Smoke Detector (ACI)
SL-2000-P
Automation Components, LLC (ACI)
The ACI SL-2000 is a UL-listed photoelectric duct smoke detector engineered for early detection of smoke and combustion products moving through HVAC ductwork. Trias Automation, an authorized distributor for ACI (Automation Components Inc.) in India, supplies this genuine SL-2000 detector to commercial, industrial, and residential HVAC contractors nationwide — backed by local stock, technical support, and ACI's manufacturer warranty. Multi-voltage input (24VAC/VDC, 115VAC, 230VAC) makes it fully compatible with India's 230V electrical standard.
ACI SL-2000 Series Duct Smoke Detector — Photoelectric Type
Sold by Trias Automation | Authorized ACI Distributor in India
The ACI SL-2000 duct smoke detector provides early, reliable detection of smoke and products of combustion circulating through HVAC supply, return, and combined air ducts. Designed by Automation Components Inc. (ACI) / Air Products and Controls, this photoelectric duct smoke detector prevents the recirculation of smoke by air handling systems, fans, and blowers — a critical requirement for commercial buildings, hospitals, data centers, industrial plants, and large residential complexes.
Built to meet UL268A standards and compliant with NFPA 72, NFPA 90A, NFPA 92A, NFPA 5000, IMC, and IFC codes, the SL-2000 is a trusted choice for HVAC fire safety systems, mechanical contractors, and fire alarm integrators.
Trias Automation is an authorized distributor of ACI products across India, supplying genuine, factory-sourced building automation and life-safety components to MEP contractors, system integrators, panel builders, and facility managers. When you buy the SL-2000 from Trias Automation, you get authentic ACI stock, competitive pricing, application support for correct duct sizing and sampling tube selection, and a local point of contact for warranty and after-sales service — rather than dealing with grey-market imports or long-lead international orders.
Key applications: HVAC duct smoke detection in commercial buildings, industrial facilities, hospitals, malls, data centers, and residential high-rises across India.
Why Choose the SL-2000 Duct Smoke Detector?
Universal Voltage Compatibility: Operates on 24VAC/VDC, 115VAC, or 230VAC — making it compatible with Indian electrical infrastructure (230V, 50Hz) as well as export/international projects.
UL & CUL Listed: UL268A, UROX, UROX7 (File #S2829) — recognized by fire consultants, MEP contractors, and AHJs.
"No-Tools" Sampling Tube Installation: Patented tube-locking mechanism speeds up installation from either the front or rear of the housing.
Dual Alarm & Trouble Contacts: Two sets of Form "C" 10A alarm contacts, one Form "A" 2A alarm contact, and a supervised Form "C" trouble contact for head-removal and power-loss monitoring.
Wide Operating Range: Detects smoke at air velocities from 100 to 4,000 ft/min, covering duct widths from 6 inches to 10 feet.
Remote Accessory Ready: Compatible with ACI's MS and MSR-50R series remote test/reset stations, horns, strobes, and status indicators.
Durable Construction: NEMA 1 rated grey plastic backbox with a clear Makrolon 94V-0 polycarbonate cover for easy visual inspection.
Technical Specifications
SpecificationDetailsModelSL-2000-P (Photoelectric)Supply Voltage24 VAC/VDC, 115 VAC, 230 VACStandby Current24VDC: 14mA | 24VAC: 55mA | 115VAC: 22mA | 230VAC: 12mAAlarm Current24VDC: 68mA | 24VAC: 190mA | 115VAC: 32mA | 230VAC: 18mAAlarm Relay Contacts2 sets Form "C" @ 10A / 115VAC; 1 set Form "A" @ 2ATrouble Relay Contacts1 set Form "C" @ 10A / 115VACDetection TypePhotoelectricAir Velocity Range100 – 4,000 ft/minDuct Width Range6" to 10 feetWiring ConnectionsScrew terminal blocks, #12–#22 AWGOperating Temperature32°F to 140°F (0°C to 60°C)Humidity Range85% ±5% RH, non-condensingEnclosure MaterialGrey plastic backbox, clear Makrolon 94V-0 coverNEMA RatingNEMA 1Dimensions13.5" (L) x 4.5" (W) x 2.25" (H)Weight2.5 lbs (1.13 kg)CertificationsUL & CUL Listed (UL268A, UROX, UROX7, File #S2829); CSFM Listed; MEA AcceptedIncluded Hardware7" exhaust tube, sampling tube end cap, mounting template, test magnet, mounting hardware
Note: Sampling tube (STN-1.0, STN-2.5, STN-5.0, or STN-10.0) sold separately based on duct width — sized to cover at least 80% of duct width
Why Buy from Trias Automation
Authorized ACI Distributor — genuine products sourced directly through the official ACI distribution channel, not grey-market imports.
Pan-India Supply — stock and delivery support for contractors, panel builders, and system integrators across India.
Technical Pre-Sales Support — help selecting the correct model, sampling tube size, and remote accessories for your specific duct and application.
After-Sales Support — assistance with installation queries, testing procedures, and warranty claims.
One-Stop BAS/HVAC Sourcing — Trias Automation supplies the broader ACI catalog (sensors, transmitters, dampers, actuators, and duct smoke detector accessories), so you can consolidate your building automation procurement with one trusted distributor.
What's in the Box
SL-2000-P photoelectric duct smoke detector unit
7" exhaust tube
Sampling tube end cap
Mounting template
Test magnet
Mounting hardware
(Sampling tube ordered separately based on duct size — ask us for the right size for your project.)
Compatible Accessories
Sampling Tubes: STN-1.0, STN-2.5, STN-5.0, STN-10.0, Fast Tube
Remote Stations: MS-KA/R, MSR-50RKA/W, MSR-50RKAV/W/C
Replacement Detector Head: 55000-328APO (Photoelectric)
Weatherproof Enclosure: WP-2000 (NEMA 3R)
Test Gas: TG-2000 Aerosol Smoke Test Canister
Frequently Asked Questions
Q: Is the ACI SL-2000 duct smoke detector suitable for 230V power supply used in India?
A: Yes. The SL-2000 accepts 230VAC input in addition to 24VAC/VDC and 115VAC, making it directly compatible with India's standard 230V, 50Hz electrical supply.
Q: Does the SL-2000 come with the sampling tube included?
A: No, the sampling tube is ordered separately based on your duct width (STN-1.0 to STN-10.0), since it must be cut to match your exact duct size.
Q: What certifications does the SL-2000 duct smoke detector carry?
A: It is UL and CUL Listed (UL268A, UROX, UROX7), CSFM listed, and MEA accepted, and is designed to meet NFPA 72, NFPA 90A, and related fire and mechanical codes.
Q: What is the difference between the SL-2000-N and SL-2000-P?
A: The SL-2000-N uses an ionization detector head, while the SL-2000-P (this listing) uses a photoelectric detector head, which is generally preferred for detecting larger smoke particles from smoldering fires.
Q: Can this duct detector be connected to a fire alarm control panel (FACP)?
A: Yes, the SL-2000 provides supervised alarm and trouble contacts that can be wired to a UL-listed conventional fire alarm control panel in Style B or Style D configurations.
Q: Who is the authorized ACI distributor in India?
A: Trias Automation is an authorized distributor for ACI (Automation Components Inc.) products in India, supplying genuine SL-2000 duct smoke detectors and related ACI building automation components to contractors and system integrators nationwide.
Q: Does Trias Automation provide technical support for selecting the right sampling tube or accessories?
A: Yes. Trias Automation offers pre-sales technical guidance to help you choose the correct sampling tube length, remote accessory, and detector head for your duct width and application before you order.