We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White round ceiling-mounted smart smoke detector and air quality monitor, hardwired with battery backup

Kidde P4010ACSAQ-WF smart sensor

SKU CH-A240-WF1J5 MPN P4010ACSAQ-WF

Combines smoke detection with indoor air-quality monitoring, sending Wi-Fi alerts to phones and voice assistants while hardwired with a 10-year battery backup

  • ColorWhite
  • Dimensions1.91 in x 5.1 in x 5.59 in
  • Weight0.7 lb
  • 2-in-1 smoke and air-quality detection in one device
  • Monitors TVOCs, humidity and temperature for healthier indoor air
  • Voice alarm announces hazard type and end-of-life replacement alert
  • Wi-Fi connectivity sends real-time alerts to smartphones and contacts
  • Hardwired 120 V power with 10-year battery backup for continuous protection

What this device is and who it fits

The Kidde P4010ACSAQ-WF combines a photoelectric smoke detector with an indoor air quality monitor in a single hardwired unit. It connects to Wi-Fi and works with Alexa, Google Home, iPhone and Android so occupants receive real-time alerts on their phones. The device is intended for homeowners who want both fire warning and TVOC, humidity and mould-risk tracking without installing separate sensors.

The specification that decides fit

This model requires 120 V AC hardwiring with a sealed 10-year battery backup, so it suits properties where a permanent mains connection is available and a decade of standby power is desired. It also interconnects only with other Kidde alarms that share the same hardwired AC capability, meaning mixed-brand systems will not trigger together.

Thermals noise and power draw in normal use

The alarm sounds at 85 decibels when smoke or a hazardous air-quality event is detected, and a tri-colour LED shows green for normal operation, amber for faults and red for emergencies. Voice prompts announce "Fire!" or "Replace Alarm" at end of life. Power is drawn from the household circuit with the internal battery maintaining function during outages.

Highlights

  • 2-in-1 smoke and air-quality detection in one device
  • Monitors TVOCs, humidity and temperature for healthier indoor air
  • Voice alarm announces hazard type and end-of-life replacement alert
  • Wi-Fi connectivity sends real-time alerts to smartphones and contacts
  • Hardwired 120 V power with 10-year battery backup for continuous protection

Specifications

BrandKidde
ModelP4010ACSAQ-WF
ColorWhite
Part Number21032070
Dimensions1.91 in x 5.1 in x 5.59 in
Weight0.7 lb

Questions about this item

How does the 85-decibel alarm perform once the unit is mounted on a ceiling?

At 85 decibels the siren meets the standard output for residential smoke alarms and is loud enough to wake sleeping occupants when installed at ceiling height.

What does the hardwired 120V connection with 10-year battery backup actually power during an outage?

The 120-volt AC feed powers normal operation; if mains power fails the sealed 10-year backup cell keeps the smoke sensor, TVOC monitor, Wi-Fi radio and voice alerts fully functional.

Will the 5.1-inch diameter base cover a standard US junction box without an adapter plate?

Yes, the 5.1-inch round footprint matches common 4-inch octagon boxes and the mounting hardware aligns with standard screw centres, so no extra plate is needed.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.