System Sensor Recalls Combination Carbon Monoxide and Smoke Detectors Due to Carbon Monoxide Hazard

Q: "Was i4 Series System Sensor combination carbon monoxide (CO)/smoke detectors recalled?"

"Yes. CPSC recall #15077 was issued on 2015-02-11. %!s(\u003cnil\u003e)"

Recall Date

2015-02-11

Products Involved

i4 Series System Sensor combination carbon monoxide (CO)/smoke detectors

Full Recall Description

This recall involves System Sensor i4 series combination carbon monoxide/smoke detector models COSMO-2W and COSMO-4W manufactured between 9/3/14 and 9/13/14. The detectors are round, white, and measure about 5.5 inches in diameter. Recalled units have date codes 4091 or 4092 printed on the lower left-hand corner of the label affixed to the back of the product and on the packaging.

View on CPSC.gov →

Data source: U.S. Consumer Product Safety Commission (CPSC) via SaferProducts.gov.

For the most current recall information, check directly with CPSC or the manufacturer.

Last verified: 2026-03-28