PROGRAMMABLE: Smart chip technology control functions and timers, The spraying frequency can be set at will (1-60 minutes); Providing three working modes from Monday to Friday, Monday to Saturday, and Monday to ; Working time can be set at will (1-24 hours), such as 10:00 am ( time) to 5:00 pm (stop time), Interval spray time and working mode can at your preferred levelSPRAY CANS: the aerosol spray utilized by the perfume dispenser matches the standard size air freshener refill cans. Compatible for , , , , etc. You can suitable refill cans on Amazon or your local . (Note: please reset the automatic pressing lever use, otherwise the automatic spray refill cans not be installedBATTERIES OPERATED SMELL SPRAYER: the spray dispenser requires 2 pcs AA batteries (not included) to operate to bring continuous and long-lasting into your bathroom, room, toilet, bedroom, office, gym, and so on. And with mounting screw fittings for easy installation OR FREE STANDING: The programmable air freshener can be mounted to your preferring height with screws included, or you can just put the metered dispenser to stand on your bedroom desk, office table, etc, Automatically spray into the room to purify the air and remove smelly odorsize: 118 x 94.5 x 250.6mmMaterial: ABScolour: black+whitePackage Contents:1 x Air Freshener Spray Dispenser(without battery)Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.