It is a fantastic machine for making a good atmosphere by spraying scented air automatically. It's also a good gift. Working mode: Day, Night, 24Hrs. Interval Spray: 5/15/25mins. 1)Application areas: home, bathroom, bedroom, office, beauty salon, hospital, hotel, entertainment places, shopping mall, stores, airport, ect. 2)Pass ISO9001/CE/ROHS/REACH certificate. 3)For better maintenance, Svavo designed a flexible structure to change the control box easier. 4)Strong metal bracket to lock the aerosol can tighter. 5)Bigger spraying orifice, no clogging. 6)Lockable design. Notice: Do not turn the machine on face when finishing aerosol air-freshener installation to avoid spraying aerosol into eyes.