This is an Insurance Approved Alarm System. It cannot be sold on a mail-order, DIY basis. Price includes installation.Some cars may need an additional door motor to be fitted to activate remote central locking. Please email or phone to clarify.Some cars may need an additional window module to be fitted to close the windows. Please email or phone to clarify.Installed price from �599.99 depending on vehicle. Please email/phone to clarify and to arrange an installation date at our WEST London workshop. Tel: 020 8570 9999This item is guaranteed for one year parts & labour.