In addition to the maintenance contract, the All-In-One maintenance contract also includes an annual on-site maintenance of your Roboboj® buoys by a certified Roboboj® partner. Thanks to this supplemental contract, you can enjoy trouble-free operation of your Roboboj® buoys for as long as possible. The hotline service is available to customers with an all-in-one maintenance contract Monday through Sunday between 6:00 and 22:00 CET