The invention discloses a
smoke alarm sensitivity detection device, comprising a case body whose lower end is provided with an opening, a smog generating device, a concentration detection circuit, a
control circuit and a blowing device. The concentration detection circuit is connected to the
control circuit; the
control circuit is connected with the blowing device; the control circuit is provided with a concentration
reference range; the case body is mounted on an
assembly line which seals the lower end opening of the case body, and a sealed
smog chamber is formed in the case body; a lower part of a front end of the case body is provided with an entrance where a first flexible door is arranged, and a lower part of a rear end of the case body is provided with an exit where a second flexible door is arranged; the smog generating device is arranged at the rear part of the
smog chamber; the case body is provided with a separator plate therein; a distance is kept between the front end of the separator plate and the case body; a distance is kept between the rear part of the separator plate and the smog generating device; an upper
flue is formed between the separator plate and the top of the case body; a lower
flue is formed between the separator plate and the
assembly line. The detection device has advantages such as high detection precision, strong
operability and high detection efficiency.