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Check whether yours is affected, then follow the instructions below.
The sensors can overheat, posing a fire hazard.
The Recall Registry rates this serious — Fire or burn risk.
Photos help. Identifiers decide. Appearance can vary by color, finish or packaging. Confirm the model number, date code or other identifier in the official notice.

Recall image provided by CPSC


Consumers should look to see if their sensors are currently operating on an AC power source and, if they are, consumers should immediately have the recalled sensors converted to a DC power source. Consumers should contact Siemens to schedule the installation of a free replacement sensor. Siemens is directly contacting owners of the recalled sensors.
Who to contact: Siemens at (800) 516-9964 from 7 a.m. to 5:30 p.m. CT Monday through Friday, or online at http://w3.usa.siemens.com/buildingtechnologies go to Product Safety Recall.
This recall involves wall-mounted Q-series sensors that control heat, air conditioning and humidity inside commercial buildings, hospitals and schools. The sensors come in three designs: a blank cover, a cover with a digital display screen or a cover with a digital display screen and door. The sensors are either white or beige and have a Siemens, Talon, Staefa Control System, Staefa Control System/Talon logo or no logo. The recalled model numbers begin with QAA and QFA, and one with SB1. They are: QAA 2060, QAA 2063, QAA 2072, QAA 2073, QFA 2000, QFA 2001, QFA 2060, QFA 2071, QFA2072, QFA 3000, QFA 3001, QFA 3060, QFA 3071, and SB1-0834. The model number is located on the sensor's circuit board inside the unit.
Siemens sales offices, partners, resellers and installers from June 2007 through August 2012 for between $200 and $400.
This recall was issued by the U.S. Consumer Product Safety Commission. The Recall Registry summarises it — always confirm the details at the source.
Their exact wording: “Siemens Recalls Temperature and Humidity Sensors for Schools, Hospitals and Other Buildings Due to Fire Hazard”
Worried about the other things in your house? You can write down what you have and be told if one is recalled — or, if you sell second-hand, check your whole stock at once.
Filed under: Everything else
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