Space Age Photoelectric Duct Smoke Detector SSU-SL-2000-P, Low-Flow, Multi-Voltage
Catch smoke inside the duct.
A photoelectric duct smoke detector for HVAC supply and return ducts. It senses smoke in moving air and runs on 230VAC, 115VAC, 24VAC or 24VDC.

Smoke travels fast through HVAC ducts.
Air moving through ducts can carry smoke and products of combustion through a building. Detecting it in the duct supports early detection.
Built for easier duct installs
Tool-free tubes, a built-in test port and extra wiring room keep installation and testing simple.
Low-Flow listing
Listed for air velocities between 100-4000'/min.

Units can be interconnected
Interconnect up to 30 units for common functions.
No-Tools tube loading
Patent pending "No-Tools Required" design loads and removes sampling and exhaust tubes from the front or rear.
Test without opening
Patent pending "Test Port Valve" allows aerosol smoke testing without cover removal, and a magnet is included for magnet testing.
Interconnect and wire
Interconnect up to 30 units for common functions, with more wiring space than competitive models.
Everything you need to know.
| Brand | Space Age |
| Model | SSU-SL-2000-P |
| Sensing Technology | Photoelectric |
| Operating Voltages | 230VAC, 115VAC, 24VAC, 24VDC |
| Air Velocity Listing | 100-4000'/min |
| Listings | UL, CUL, CSFM, and MEA |
| Form Factor | Duct Mount |
| Height | 4.50" |
| Width | 13.50" |
| Depth | 2.30" |
| Country of Origin | US |
| Compatibility | SSU-WP-2000 weatherproof enclosure |
Space Age Photoelectric Duct Smoke Detector SSU-SL-2000-P, Low-Flow, Multi-Voltage
The Space Age SSU-SL-2000-P Photoelectric Duct Smoke Detector (Low-Flow, Multi-Voltage) is a duct smoke detector for professional installation. It is made for installers, integrators and facility teams who need a dependable replacement or new-build part that matches the original part number.
Key Features
- Low-Flow Technology: Both Ionization and Photoelectric models listed for velocities between 100-4000'/min
- Both models listed for high-temperature applications
- UL, CUL, CSFM, and MEA Listed
- Operating voltages: 230VAC, 115VAC, 24VAC, 24VDC
- Interconnect up to 30 units for common functions
- Patent pending "No-Tools Required" front or rear loading and removing sampling/exhaust tubes
- Patent pending "Test Port Valve" allows for aerosol smoke testing without cover removal
- Magnet test capability (magnet included)
- More wiring space than competitive models
- Compatible with the WP-2000 weatherproof enclosure
Specifications
- Brand: Space Age
- Model: SSU-SL-2000-P
- Product Model: SSU-SL-2000-P
- Product Type: Smoke Detector
- Connectivity Technology: Wired
- Detectable Medium: Smoke
- Maximum Air Velocity: 20.32 m/s
- Sensing Technology: Photoelectric
- Status Indicators: Alarm, LED
- Depth: 2.3"
- Form Factor: Duct Mount
- Height: 4.5"
- Weight (Approximate): 2.50 lb
- Width: 13.5"
- Input Voltage: 120V AC, 230V AC, 24V DC
- Power Source: AC
- Certifications & Standards: UL listed
- Compatibility: SSU-WP-2000 Weatherproof Enclosure
- Shipping weight: 2.45 lb
Typical Uses
- Smoke detection in HVAC supply and return ducts
- Commercial HVAC fire protection
Please confirm that the SSU-SL-2000-P matches your system, compatible devices, mounting and finish requirements before ordering. Contact us with the model of your existing equipment if you need help checking compatibility.
Need help with compatibility?
Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.

Space Age SSU-SL-2000-P, ready to order.
- SSU-SL-2000-P Smoke Setector
- 7 '' Exhaust Tube
- Sampling Tube End Cap
- Mounting Template
- Mounting Hardware
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