Blow sound recording door. A sound – a door to open, a sound – a door to close. It is a plastic door. In record the mechanism of key system is audible. Record is carefully improved by sound plug-ins. Option with pure record and option with addition of effect of reverberation of the room. D(close): 00:01; D(open): 00:01; D+R(open): 00:01; D+R(close): 00:01.