APC Duct Mounted Carbon Monoxide Detector Kit
APC Duct Mounted Carbon Monoxide Detector Kit
Item # SL-701

The SL-701 Series from Air Products and Controls (APC) is a duct detector that monitors for dangerous carbon monoxide (CO). The SL-701 detects harmful levels of CO and shuts down air handling systems, preventing further spread and alerting building maintenance of the problem. APC's patented CO sensor is pre-set to trigger shut down at concentrations deemed hazardous by OSHA and NFPA.

The kit includes the detector, our brand new FAST Tube Sectional Sampling Tubes and a MSR-50CO Remote Accessory programmed with temporal 4 sound and LED strobe, as well as all mounting hardware. 

Features and Benefits
  • Hybrid-style sensor monitors at the National Standards set by OSHA (IAQ) and UL2075/2034 (Life Safety)
  • “Snap-in” sensor is easily replaced at end of life
  • Solid green LED on sensor head indicates normal operation
  • Detector Test Mode allows for aerosol CO testing without cover removal using the Test Port Valve
  • Historical, retrievable reporting data stored at the unit
  • Unit performs “hidden” self-test every 24 hours
  • Patented front and rear leading and removing sampling/exhaust tubes
  • Interconnect up to 30 units for common functions
  • Advanced sensor design yields internal dust filtering
  • No additional screens or filters to clean
  • Compatible with building automation and combination CO/fire alarm systems
  • Complete wiring details permanently attached to the unit
  • Can be paired with the MSR-50/CO for remote audio and visual alarm
  • 5-year warranty
Product Specifications
13.50” x 4.50” x 2.25” (WHD)
Input Voltage
Standby Current
Alarm Current
Relay Contact Ratings
Alarm – Resistive load: 2 sets form “C” rated at 10 amps @115VAC; Resistive load: 1 set form “A” rated at 2 amps
Trouble Contacts – Resistive load: 1 set form “C” rated at 10 amps @115VAC
Air Velocity
100 to 4,000 ft/min
Operating Temperature
32° to 158° F
Operating Humidity
10% to 85% non-condensing
Sampling Tubes
FAST Tube - Sectional sampling tube
STN-2.5 - Metal sampling tube for 6” to 2.5’ duct width
STN-5.0 - Metal sampling tube for 2.5’ to 5.0’ duct width
STN-10.0 - Metal sampling tube for 5.0’ to 10.0’ duct width


5418 Elmwood Ave | Indianapolis IN 46203 | 888-652-9663