The clamp option can be attached to any vertical post with a diameter between 75mm and 150mm. If you only need to use one unit at a time but in multiple locations, the removable plate mounting is the one for you. Simply slide the belt housing out of the permanently attached plate and into another one.
Use the S clip belt end to simply wrap the belt around a post then hook into itself to avoid needing a receiver. The magnetic belt end can be easily released whereas the panic break uses the magnetic end but has a steel receiver so can be used on all surfaces rather than just metallic.