Features  

• 4-Wire Photoelectric, integrated low-flow technology 

• Air velocity rating from 100 ft/min to 4,000 ft/min (0.5 m/s to 20.32 m/sec) 

• Versatile mounting options: square or rectangular configuration 

• Cover integrated smoke test port 

• Plug-in sensor offers the latest sensor technology 

• Broad ranges for operating temperature (–4°F to 158°F) and humidity (0% to 95% non-condensing) 

• Patented sampling tube installs from front or back of the detector with no tools required 

• Increased wiring space with an added ¾-inch conduit knockout 

• One easy-access Test/Reset button 

• Patented interconnect feature for multi-fan shutdown 

• High contrast terminal designations and wiring diagram label make wiring easy 

• Built-in short circuit protection from operator wiring errors • Two DPDT Form-C relay contacts 

• 24 VAC/DC or 120 VAC 

• Compatible with existing System Sennsor duct smoke products, including remote accessories RTS151 and RTS151KEY