AJ-938WB wifi smoke and carbon monoxide detector

  • wifi smoke and carbon monoxide detector
  • Smart phone app control
  • Smoke and CO 2-in-1
  • 10 years of battery life
  • 10 years of Figaro CO sensor
  • ETL UL217/UL2034 FCC listed
  • Low battery warning
  • Easy installation
  • Loud 85db Buzzer


10 Year Lithium Battery wifi smoke and carbon monoxide detector

This smoke and carbon monoxide alarm 10 years of continuous power with a built-in lithium battery, saving on energy while remaining; Gives you the earliest possible warning of smoke and carbon threat with both a loud 85 dB alarm and a rapid flashing red LED indicator; this alarm is sure to wake up you and your family, even when sound asleep

  • 10 year sealed battery-powered alarm
  • Optical smoke sensor – Detects slow-smoldering fires
  • Smart Silence – Silence false alarms
  • Reduces nuisance alarms
  • 10-Year Battery Life

    This operated combination alarm provides constant monitoring, even if there’s a power failure. Therefore, your home and family will be protected 24/7 so everyone can sleep safe and sound at night.


    Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs

  • WiFi Base

    With WiFi Base, Can Support mobile App Connection

Additional information


AJ-933, AJ-938, AJ-939

technical parameter

WIFI UL217/2034 Smoke&Carbon monoxide detector

Smoke module:

Working Voltage: DC3V built-in lithium battery(CR 123A)
Battery life:10 years
Standby current:8.2uA
Alarm current:﹤60mA
Battery life:10 years
Sound level:﹥85dB
Low battery threshold:2.5±0.1V
Alarm mode: Siren with flash(Buzzer & Red LED)
Big test button for easy recommended monthly testing
CO Alarm concentration:
Gross weight: 0.295KG
product size:135mm*35mm
Execute Criterion: UL217/UL2034

Wifi Module

Working Voltage:DC 6V battery (replaceable)

Low voltage threshold:5.2V

Lifespan>3 years

Alarm mode:LED & buzzer & APP alarm


Fire protection grade :V-0

Frequency range:2412-2472MHz

Antenna gain:2. .5dB

Max. Radio Transmission Power: 13dB


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