Avoid street vendors the risk of purchasing counterfeit products is high
Generally, we have found that the battery-powered models are a bit easier to install, as you just need to attach the mounting bracket to the wall, insert batteries, and clip on the alarm
Exp Lung Res 31:318 Alexander DJ, Collins CJ, Coombs DW, Gilkison IS, Hardy CJ, Healey G, Karantabias G, Johnson N, Karlsson A, Kilgour JD, McDonald P (2008) Association of inhalation toxicologists (AIT) working party recommendation for standard delivered dose calculation and expression in non-clinical aerosol inhalation toxicology studies with pharmaceuticals
Cigarette smokers produce an estimated 1.69 billion pounds of toxic waste each year
Responses were recorded for targets (hits and misses) and non-targets (false alarms and correct rejections)