Super Control

About:

Super Control is an intelligent software that enables you to gain more bookings with less work so you can free up money, time and resources to concentrate on innovating. They connect you with guests through their complete business toolkit and meaningful relationships with a growing network of trusted partners.

integration: 

Super Control is a two-way integration, meaning you can synchronize your calendars with other parties to reflect the same availability using iCal.

NB: you need to obtain your unit references from Super Control, contact their friendly support for these details.