YoLink Smoke & CO Alarm And Communication Base, YoLink Hub Required

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  • $98.99
  • Regular price $119.99
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  • A new smart wireless combination smoke detector and carbon monoxide detector with an audible alarm, by combining the YoLink Wireless Communication Base and the ANKA Smoke & CO Alarm. Add life safety and property protection to any YoLink system, whether for residential or commercial applications


  • Wireless operation; no 120V outlet or wiring required
  • Industry-leading low power consumption allows for batteries to last up to 10 years, for both the Smoke & CO Alarm and Wireless Communication Base, sparing your time – replacing batteries – and saving money. (Smoke & CO Alarm batteries are not replaceable. Based on many fire and life safety codes, both smoke and carbon monoxide detector heads should be replaced every ten years. Replace the detector head at this time.)
  • Use the YoLink app to schedule regular automatic detector self-tests, or receive reminders to test the detector manually
  • Be warned of extremely high temperatures exceeding 135°F (57°C)
  • Monitor critical life safety detector status in real-time, using the convenient YoLink app
  • Alexa and IFTTT integration
  • YoLink’s industry-leading long-range communication and low-power operation


  • Works with the convenient and user-friendly YoLink app
  • One device detects both smoke and carbon monoxide, reducing costs
  • Check remotely using the YoLink app, anytime and from anywhere
  • The wireless design does not require the installation of or connection to electrical mains wiring, allowing for a simple, safe, and fast installation, with no electrical or technical experience or knowledge required. Simply mount the base to the ceiling or wall surface, then twist in the detector head*
    • The equipment should be installed in accordance with the National Fire Protection Association’s Standard 72 (NFPA72, National Fire Protection Association, Batterymarch Park, Quincy, MA 02269)
  • Create custom automation using the YoLink app, to trigger responses from other YoLink devices, such as the Siren Alarm
  • Use the IFTTT service (www.ifttt.com) to create custom automation with YoLink and third-party devices, tailored to your particular needs and your IoT devices (IFTTT is a paid service for more than 3 custom automation)
  • Easy to install and portable; move to other locations as needed
  • Photo-electric smoke detection technology, versus ionization type, provides reduced false alarms and years of trouble-free operation
  • Carefree maintenance, with more years between battery replacement
  • UL (UL217/UL2034) and ETL Listed
  • Proven quality CO sensor, by Figaro of Japan, lasts for 10 years
  • Low-battery alerts give you advanced warning that it is almost time to replace the batteries
  • Extremely easy and fast installation using the YoLink app with Scan & Play



  • YoLink Hub with an internet connection (wired Ethernet or 2.4GHz Wi-Fi). Refer to the Hub user guide for additional information
  • Smartphone or tablet running iOS 9 or higher, Android 4.4 or higher


  • Brand: ANKA
  • Model: AJ-939
  • Color: White
  • Compatible Detector Heads: Smoke, Carbon Monoxide
  • Power: 1 CR123A Lithium battery (3V DC)
  • Current Draw: 8.2uA (standby), < 60mA (working)
  • Battery Life: 10 years
  • Low Battery Threshold: 2.5±0.1V
  • Sound Level: 85 dB
  • Sensitivity: 1.07% to 2.64%/FT.OB
  • Alarm Mode: Audible (Piezo) & Visible (LED)
    • PPM: 70 – Time Until Alarm: 60-240 minutes
    • PPM: 150 – Time Until Alarm: 10-50 minutes
    • PPM: 400 – Time Until Alarm: 4-15 minutes
  • Gross Weight: 0.295KG
  • Product Size: 135mm*35mm
  • Certification: UL217 & UL2034
  • Operating Temperature Range:
    • 32℉ – 122℉ (0℃ – 50℃) (Common)
    • 23℉ – 131℉ (-5℃-55℃) (Occasionally)
  • Operating Humidity Range: 5-95% RH (non-condensing)
  • Intended for indoor use only


  • Semtech® LoRa® RF Module YL09 microcontroller with 32-Bit RISC processor
  • Color: White
  • Detection Sensors: Smoke; carbon monoxide; temperature
  • Temperature Value Accuracy: 1 (°F/°C)
  • Detection Temperature: -4°F-122°F, ±3.6°F (-20°C-50°C, ±2°C)
  • Dimensions: Φ4.80 x 0.87 inches (Φ122 x 22 mm)
  • Multi-color status LED (rear)
  • SET button (rear)
  • Power: 2 AAA lithium batteries (3V DC)
  • Battery Life: 10 years
  • Current Draw: ≤ 135mA (working), ≤ 5uA (standby)
  • Environmental:
    • Operating Temperature Range: -4°F-122°F (-20°C-50°C)
    • Operating Humidity Range: ≤95% (non-condensing)
    • Intended for indoor use only


    • (1) AJ-939 ANKA Smoke & CO Alarm
    • (1) YS7A01-UC YoLink Communication Base
    • (1) Quick Start Guide


    • YoLink products work only in the USA and Canada
    • The Siren is packaged with a quick start guide only. Please download the current Installation & User Guide